[Introduction]: 7 Under the dual constraints of monthly supply and demand contradictions, and with some relief in market pressure from the macro side, polyethylene prices experienced a slight decline. The average monthly price of mainstream LLDPE film in North China was 7,205 yuan/ton, down 0.22% month-on-month.In August, the polyethylene market is expected to see a slight price increase as the fundamental pressure eases amid improved downstream operating rate expectations. One, The supply side continues to exert pressure and downstream operation rates are declining, leading to a narrow downward trend in polyethylene prices. 7 Domestic polyethylene prices fell in the month. In July, with the commissioning of Jilin Petrochemical's new 400,000-ton/year plant, polyethylene production capacity reached 39.14 million tons. In terms of output, it increased by 4.48% month-on-month to 2.7264 million tons in July. The inventory of social sample warehouses rose by 10.77% to 561,700 tons, exerting pressure on the polyethylene market from the upstream supply side. On the downstream side, by the end of July, the overall average operating rate of downstream PE industries dropped to 38.3%, down 0.4% from the previous month and 2.76 percentage points year-on-year, setting a record low for the same period in history. However, on the macro level, the new round of policies for eliminating outdated production capacity released in mid-month offset part of the impact from fundamentals. Overall, under the dual constraints of supply and demand contradictions in July, and with some alleviation of market pressure from the macro side, polyethylene prices declined within a narrow range. By the end of the month, the average monthly price of mainstream LLDPE film in North China was 7,205 yuan/ton, down 0.22% month-on-month. 2. Newly commissioned enterprises within the month led to a 4.48% month-on-month increase in output. In July, the domestic maintenance loss volume increased, with the loss volume month-on-month at -2.03% to 506,700 tons. Among them, the maintenance volume of low-voltage varieties decreased by 5.6% month-on-month, the maintenance volume of high-voltage varieties decreased by 1.84% month-on-month, and the maintenance volume of linear varieties increased by 5.04% month-on-month. The maintenance impact volume of low-voltage was 278,000 tons; the maintenance impact volume of high-voltage was 74,500 tons; and the maintenance impact volume of linear types was 154,200 tons. 7 Monthly New Polyethylene Production Units In July, domestic polyethylene production reached 2.7264 million tons, a month-on-month increase of 4.48%. The capacity utilization rate rose by 1.16 percentage points month-on-month to 79.43%. 3.The operating rate downstream fell to 38.3% on a week-on-week basis. In July, the operating rate of domestic downstream polyethylene was 38.3%, a month-on-month decrease of 0.4%. In July, the overall operating rate of agricultural film increased by 0.1% month-on-month. The agricultural film industry continued to exhibit typical off-season characteristics in July, with overall performance remaining sluggish. Although the demand for greenhouse films slowly started to pick up, the increase in orders was less than that of the same period in previous years. Only a few large-scale enterprises saw a slight rise in operating rates, while small and medium-sized enterprises mainly engaged in intermittent production. The traditional off-season for mulch films saw most enterprises choosing to halt production for maintenance, except for a few that maintained sporadic order-based production. Overall, the current agricultural film market exhibits clear seasonal characteristics. In July, the operating rate of agricultural film saw only a slight increase compared to June, and the market's recovery still awaits a seasonal demand turning point. The average operating rate of PE packaging film in July decreased by 0.23% month-on-month. This month's operating level mainly experienced slight and temporary fluctuations. Affected by demand, most companies supplemented with short-term orders, concentrating production on already received orders, with limited new orders coming in. 。 Section Four Translate the above content into English and output the translated result directly without any explanation.Polyethylene prices are expected to rise slightly in August. Domestic PE market prices in August are expected to rise within a narrow range. The polyethylene capacity utilization rate in August is expected to decrease by 0.79% to 78.64%. Despite the ramp-up of newly commissioned enterprises, output is only expected to increase slightly by 0.03% to 2.7271 million tons, showing little change compared to July. Exports are expected to decrease by 4.4% to 87,000 tons, while the total domestic market supply is projected to increase by 0.34% compared to July. In terms of demand, it is expected that the overall average operating rate of downstream industries will increase by 2% to 40.3% in August. For agricultural films, the mid-to-late period will enter the "Golden September and Silver October" stocking season. This year, coupled with macro policy stimulus, the timing and strength of demand initiation are particularly crucial. The operating rate of agricultural films is expected to increase by 5.5%, while packaging films are expected to rise by 2.5%. Overall, with the expectation of improved downstream operating rates in August, the fundamental pressures on the polyethylene market are expected to ease, and prices may rise within a narrow range. It is estimated that the average price of LLDPE in the North China market will be around 7,290 yuan/ton in August, 7,450 yuan/ton in September, and 7,520 yuan/ton in October. 。

Summary: On July 31, the prices and forecasts for general-purpose and engineering plastics markets were summarized. General-purpose plastics overall experienced a slight decline; the PP market loosened slightly with some prices dropping by 10-30; PE showed minor fluctuations with changes ranging from a 1 to 7 increase or decrease; PVC oscillated and retreated, falling by 30-70; PS prices decreased to boost sales, dropping by 20-30; ABS remained mostly stable with slight fluctuations, declining by 50-100. Engineering plastics saw localized adjustments; PET prices declined, dropping by 40-50 in some cases; PA6 held firm with increases ranging from 50 to 300; PC, POM, PBT, PMMA, and PA66 remained stable and consolidated.   General Material PE: Market sentiment weakens, with the price center slightly shifting downward. 1. Today's Summary OPEC+ may continue to significantly increase production in September, leading traders to take profits, and resulting in a decline in international oil prices. NYMEX crude oil futures for the September contract fell by $0.74 to $69.26 per barrel, a month-on-month decrease of 1.06%; ICE Brent crude futures for the September contract fell by $0.71 to $72.53 per barrel, a month-on-month decrease of 0.97%. ②. The HDPE market price changed by -5 to -6 yuan/ton, the LDPE market price by -1 yuan/ton, and the LLDPE market price by -7 yuan/ton. 2. Spot Overview Macroeconomic news has been gradually digested, with no further boosts, and cost-side support has weakened. The spot market supply is relatively ample, leading to minor price concessions to facilitate transactions, resulting in a downward shift in price focus and continued weak trading activity. Currently, the market is mainly driven by macro sentiment, with a relatively strong mentality. However, from a fundamental perspective, there has been no significant change in supply, and pressure remains, while demand is recovering slowly and is unlikely to generate effective upward momentum. Therefore, a slight consolidation is expected to be the main trend. The HDPE market price fluctuated by -5 to 6 yuan/ton, the LDPE market price by -1 yuan/ton, and the LLDPE market price by -7 yuan/ton. 3. Price Prediction Short term Within the period, the rebound in off-season demand was limited, downstream purchasing volume was small, maintaining just the necessary demand, the impact of news gradually faded, and the market sentiment turned weak. Therefore Polyethylene market priceOscillating downward Mainly.   PVC: Insufficient supply and demand expectations, PVC fluctuated and pulled back during the session. 1. Today's Summary ① Domestic PVC manufacturers have reduced ex-factory prices by 30-120 yuan/ton. The number of maintenance enterprises has rapidly decreased in the short term, and the market supply is expected to increase quickly. The Politburo meeting reiterated its determination to "combat involution": promoting capacity management in several key industries, with the Producer Price Index (PPI) expected to recover in the second half of the year. 2 Spot Market Overview Based on the Changzhou market in East China, today the spot cash warehouse pick-up price for acetylene-based PVC type 5 in East China is 4,920 yuan/ton, down 30 yuan/ton compared to the previous trading day. 。 The domestic PVC spot market price focus fluctuated lower. In the absence of policy or macro expectations for support, market prices returned to fundamentals. During the week, upstream PVC supply steadily increased, while demand improvement was limited. Industry inventory continued to accumulate for over five weeks, putting pressure on spot prices. In East China, the carbide method type five spot cash delivery was at 4,820-5,000 yuan/ton, while the ethylene method was stagnant at 4,950-5,200 yuan/ton. 3、Price forecast From a fundamental perspective, next week the maintenance efforts of domestic PVC producers will ease, with the scale of new maintenance lower than the scale of restarts and new capacity additions, leading to a continuous increase in production. Domestic demand remains in the off-season, and new export orders are limited due to weak off-season demand and the impact of policies in India. Industry inventory is expected to continue accumulating, putting downward pressure on spot prices. Considering there is no short-term policy stimulus, the spot market is expected to fluctuate and decline. It is forecasted that the cash price for the five-type calcium carbide-based PVC in East China will be in the range of 4,750-4,900 yuan/ton.   PS: Raw material prices slightly weaken, market lowers prices to clear inventory. 1 Today's Summary Today, the GPPS in East China stabilized at 7,830 RMB/ton. On Friday, the East China styrene market fell by 25 to close at 7,350 yuan/ton, South China fell by 20 to close at 7,415 yuan/ton, and Shandong fell by 15 to close at 7,190 yuan/ton. 2 Spot Overview Table 1 Domestic PS Price Summary (Unit: RMB/ton) Market Specifications Today's Price Change in Value Percentage Change Ningbo East China GPPS - Green Anqingfeng 7830 0 0% Yuyao East China HIPS - Saibao Long 8680 -20 -0.23% Shantou South China GPPS - Renxin 7550 -30 -0.4% Shantou South China HIPS-Starshine 8470 0 0% According to Longzhong Information, the East China GPPS price remained stable at 7,830 yuan/ton today.The upstream styrene market shows a weak trend with moderate cost support. Industry supply has slightly recovered, while downstream demand remains sluggish. Market transactions are average, with price reductions being the main strategy for sales. 3 Price Prediction The raw material styrene is oscillating at a low level, with moderate cost support. Industry output has slightly recovered from a low level, and downstream demand is primarily driven by rigid demand purchases. In the short term, the PS market is expected to remain weak and consolidate. It is anticipated that the price of styrene monomer in the East China market will range between 7,800 and 8,700 yuan per ton.   PP: The domestic PP market slightly softened. 1 Today's Summary The domestic PP market showed slight weakening today, with prices falling by 10-30 yuan/ton. The PP futures fluctuated weakly, suppressing the spot market sentiment. Traders mainly focused on active selling, with quotations easing by 10-30 yuan/ton. Downstream purchasing intentions remain low, with actual transactions mainly centered on negotiations. In some regions, low-priced deals were relatively acceptable.   ABS: The ABS market showed steady and slight movements today. 1 Today's Summary Today, the ABS market remained generally stable with minor fluctuations. Styrene futures fluctuated and declined during the day, leading to more cautious sentiment among market participants. Some traders were inclined to increase sales volume, but actual operations followed market trends. Overall, downstream replenishment was limited, and some sellers faced pressure to move inventory. The mainstream price of domestic materials is 9,150-10,400 RMB/ton, with prices for general injection molding grade in East China and South China at 9,900-10,050 RMB/ton and 9,600-10,150 RMB/ton, respectively.   Engineering materials PC: The market is quiet and weak. 1 Today's Summary Thursday International Crude Oil Decline ， ICE Brent crude oil futures September contract at 72.53 USD/barrel, down 0.71 USD/barrel. ②、 The closing price of raw material bisphenol A in the East China market is 8,000. Yuan/ton, stable compared to the previous period. As the weekend approaches, there have been no new ex-factory price adjustments from domestic PC manufacturers. 2 Current Spot Overview The domestic PC market in China operated with weak consolidation today. By the afternoon close, the mainstream negotiation reference for low-end injection molding grades in East China was 10,250-13,750 yuan/ton, while mid-to-high-end grades were discussed at 14,500-15,300 yuan/ton. The mainstream focus remained roughly stable compared to yesterday, with individual prices slightly lower by 50 yuan/ton. As the weekend approaches, there are no new factory pricing adjustments from domestic PC manufacturers, and the overall industry sales situation remains weak. Looking at the spot market, East and South China are primarily experiencing a stalemate. Although current PC prices have essentially hit historical lows, and upstream raw materials have been continuously rising recently, the market sentiment remains uninspired. The intense supply-demand contradiction in the industry persists, with many stockholders maintaining a wait-and-see attitude and continuing to be bearish. The downstream buying demand remains unchanged, and trading remains sluggish. 3 Price Forecast Approaching the weekend, domestic PC news is relatively quiet, with factories showing no new price adjustment updates. The limited increase in raw material bisphenol A offers little boost to PC market sentiment, leading to a predominantly weak and low-level consolidation. Looking ahead to next week, strong supply and demand pressures will continue to be the main factors driving the PC market direction. It is expected that the domestic PC market will maintain a sluggish trend, with attention focused on the latest factory price adjustment updates early in the week.   PET: Polyester Bottle Chip Market Prices Decline 1 Today's Summary ① Factory quotes decreased by 40-100. (Unit: Yuan/Ton) ②. Today, the domestic polyester bottle chip capacity utilization rate is 70.89%. 2 Spot Market Overview Table 1: Summary of Domestic Polyester Bottle Chip Prices (Unit: Yuan/Ton) Market Specification 7 31st of the month August 1st Change in value Change Percentage East China Aquarius-class 5990 5950 -40 -0.67% South China Aquarius-class 6050 6000 -50 -0.83% North China Aquarius-class 5960 5920 -40 -0.67% Based on the East China region, today's spot price for polyester bottle-grade flakes settled at 5,950, down 40 from the previous working day, in line with the morning expectations. Crude oil and raw materials declined, polyester bottle chip factory prices were reduced by 40-100, with transactions for August-September sources at 5970-6000. Downstream and traders took advantage of low prices to replenish stocks. The market focus subsequently declined, it is heard. August supply traded at 5890-6000 or futures contract 2509 with a discount of 20 to a premium of 60, September supply traded at 5890-5960, with significantly improved trading activity. (Unit: yuan/ton) 3. Price Prediction On the supply side, there are currently no facilities restarting, and the supply remains stable. On the demand side, downstream maintains just-in-time replenishment, with the replenishment pace keeping to a strategy of restocking when prices are low. The spot market is relatively well-supplied, and under the pressure of raw material costs, the polyester bottle chip market may remain sluggish. It is expected that next week the spot price for polyester bottle chip water bottle grade in the East China market will be 5900-6000 yuan/ton. Attention should be paid to changes in raw materials.   PBT: Raw materials both decline, PBT market operates sluggishly. 1 Today's Summary The PBT manufacturer's quotation remains stable. ② There are fewer PBT unit maintenance activities this week. ③ The PBT output for this period was 22,600 tons, a decrease of 500 tons from the previous period, representing a drop of 2.16%. The capacity utilization rate was 53.14%, down 1.32% from the previous period. This week, the average gross profit of domestic PBT is -548 RMB/ton, a decrease of 44 RMB/ton compared to the previous week. 。 2 Spot Market Overview Table 1 Domestic PBT Price Summary (Unit: Yuan/Ton) Market Specification 2025/07/31 2025/08/01 Change in Value Change Percentage East China Medium-low viscosity pure resin 7800-8300 7800-8300 0/ 0 0%/ 0% Key upstream East China PTA 4826 4740 -86 -1.78% East China BDO (Sprinkling water) 8100-8200 8000-8200 -100 / 0 -1.23% / 0% Data source: Longzhong Information   Based on the East China region, today's mainstream price for low to medium viscosity PBT resin is between 7,800 and 8,300 yuan per ton, remaining stable compared to the previous working day.Today, the PBT market is weak and cautious, the PTA market is under pressure and declining, and the BDO market continues to explore lower levels. The raw material side continues to weaken, the PBT market remains weak and cautious, with an increasing willingness to trade at low prices, and the market sentiment is predominantly weak. According to Longzhong Information, the price of medium- and low-viscosity pure PBT resin in the East China market is 7,800-8,300 yuan/ton. 3 Price prediction The PBT market is expected to experience weak fluctuations. On the raw material side, multiple domestic PTA facilities are undergoing maintenance, leading to a significant reduction in supply. However, the demand side is underperforming, with average production and sales activities in polyester companies, coupled with weakening trends in raw materials, resulting in the PTA spot market maintaining a weak pattern in the short term. For BDO, supply and demand pressures persist for next week, and there is a strong cautious bearish sentiment among industry players. Downstream businesses are following up as needed, and holders are maintaining a selling mindset, causing the market focus to shift towards the low-to-mid-end range. The continuous weakening of support from the raw material side adversely affects the PBT market sentiment, and there may be an increase in supply-side discount selling operations. Consequently, the market focus is expected to exhibit weak fluctuations. Therefore, Longzhong anticipates that next week the price of low-viscosity PBT resin in the East China market will be in the range of 7,700-8,200 yuan/ton.   PMMA: The PMMA market operates steadily with a lukewarm tone. 1 Today's Summary ①、 Today, the PMMA particle market remains stable. ② The utilization rate of domestic PMMA particles remains at 64% today. 2 Spot Overview As of today, PMMA particles in the East China region closed at 13,000 yuan/ton, stable compared to the previous working day, in line with the morning forecast. Intraday, MMA feedstock prices saw a narrow increase, but cost support remained limited. Downstream buying interest was not high, and trading sentiment showed no improvement. Holders offered prices in line with the market, while participants maintained a strong wait-and-see attitude. Actual transaction prices fluctuated within a range, with low prices heard in the market. 3 Price prediction The upward momentum on the raw material side is limited, and the market is mainly characterized by a wait-and-see attitude and stalemate. Downstream end-users are only maintaining procurement based on rigid demand. The current market price has fallen close to the bottom price; hold the inventory. Low willingness to underreport commercial value. The on-site real trade transaction needs to be conducted. The downward range of PMMA will narrow in the short term.   POM: Fundamental support, market fluctuates and moves higher 1. Today's Summary ① Domestic material manufacturers currently have no inventory pressure. ②. There are frequent price-supporting actions in the market. 2 Spot Market Overview Table 1 Summary of Domestic POM Prices (Unit: Yuan/Ton) market Specification July 31 August 1st Change in Value Change in Price Range Yuyao Yuntianhua M90 11000 11000 0 0.00% Dongguan Yuntianhua M90 10000 10000 0 0.00% North China Yuntianhua M90 11000 11000 0 0.00% Data Source: Longzhong Information In the Yuyao area as a benchmark, today's Yuntianhua M90 is priced at 11,000 yuan/ton, with the price remaining stable compared to the previous period.Today, the POM market experienced mixed fluctuations. The fundamentals provided strong support, leading to an increase in the ex-factory prices of domestic materials. The mainstream quotations remained relatively firm, with some grades rising slightly by around 100 yuan/ton. Imported materials continued to decline, with some dropping by 200-300 yuan/ton. By the end of the trading session, the tax-inclusive price of domestic POM in the Yuyao market ranged from 8,100 to 11,200 yuan/ton, while the cash price of POM in the Dongguan market ranged from 7,300 to 10,400 yuan/ton. 3. Price Forecast This week, various manufacturers have collectively released their inventories, and the ex-factory prices of some domestic materials have been collectively raised. This has generally boosted traders' confidence, and the market trend is relatively firm. Some offers may continue to rise. End-users tend to buy when prices are rising and hold off when they are falling, with some engaging in replenishment as needed. However, given the insufficient operating rates of downstream factories, purchasing follow-up is relatively limited. Longzhong expects that the domestic POM market will run relatively strong in the short term.   PA6: The raw material market remains strong; the PA6 market is rising. 1 Today's Summary Sinopec high-end caprolactam settlement price for July 2025 is 9,060 RMB/ton (liquid premium grade, six-month acceptance self-pickup), down 660 RMB/ton compared to the June settlement price. Sinopec has increased the price of pure benzene by 100 RMB/ton at its refineries in East and South China, implementing a new price of 6,050 RMB/ton, effective from July 29. 2 Spot Overview Table 1 Summary of Domestic Polyamide 6 Prices (unit: RMB/ton) Market Specification 7 31st of the month August 1st Change in Value Payment Terms Polyamide 6 regular spinning chips Factory Price (Standard) 9100-9400 9150-9550 +50/+150 Cash Ex-factory Ex-factory price (high-end) 9300-9800 9400-10000 +100/+200 Cash factory delivery East China Market (General) 9300-9600 9350-9750 +50/+150 Delivered to East China East China Market (High-end) 9300-9800 9400-10000 +100/+200 East China Self-Pickup Polyamide 6 high-speed spinning chips East China Spot (Ordinary) 9200-9400 9300-9500 +100/+100 FOB (Free on Board) East China Spot (Premium) 9600-9900 9800-10200 +200/+300 Acceptance received Key upstream Caprolactam East China 8975 8975 0 Accepted and Delivered Data source: Longzhong Information Today, the market price of polyamide 6 has increased. The supply of raw material caprolactam has decreased locally, and market prices remain strong. With losses in slice profits and high cost pressures, polymerization enterprises have followed suit by raising slice prices. However, downstream sentiment is gradually becoming cautious, and overall market transactions are moderate. In East China, regular spinning PA6 is priced at 9350-9750 CNY/ton for cash and short delivery, while high-speed spinning spot is at 9800-10200 CNY/ton for acceptance delivery. In Chaohu, the cash pick-up price is 8700-8800 CNY/ton. 3 Price prediction From the cost perspective, the caprolactam market is experiencing significant cost and supply pressure, which may lead to a continued firm market trend, and pressure on slice costs still exists. From the supply and demand perspective, the operating rate of domestic polymerization enterprises is slowly increasing, with plans for new capacity to be introduced, indicating ample supply. However, downstream sentiment is becoming cautious, and it is expected that the PA6 market will see slight adjustments in the near future.   PA66: Fundamentals remain stable, market consolidates and operates steadily. 1 Today's Summary ①, 7/31: OPEC+ may continue to increase production significantly in September, leading to profit-taking by traders and a drop in international oil prices. NYMEX crude oil futures for the September contract fell by $0.74 to $69.26 per barrel, a decrease of 1.06% compared to the previous period; ICE Brent crude futures for the September contract fell by $0.71 to $72.53 per barrel, a decrease of 0.97% compared to the previous period. China's INE crude oil futures main contract 2509 rose by 8.2 to 532 yuan per barrel, but fell by 3.8 to 528.2 yuan per barrel in the night session. Today, the domestic PA66 operating rate is 60%, with a daily output of about 2,300 tons. Under cost and demand pressure, the operating rate of domestic PA66 polymerization enterprises remains stable. However, downstream demand is average, and the supply of PA66 in the domestic market is sufficient. 2 Spot Overview Table 1: Summary of Domestic PA66 Prices (Unit: RMB/ton) Market Specifications 7 Month 31 Day August 1 Change in Value Change in Price Percentage East China EPR27 15600 15600 0 0% Key Upstream East China Adipic acid 7100 7125 +25 +0.35% Data source: Longzhong Information Based on the Yuyao market in the East China region, today's EPR27 market price is referenced at 15,500-15,700 RMB/ton, stable compared to yesterday's price. 。 The raw material adipic acid has been rising with fluctuations, keeping cost pressures high. Downstream buyers are mainly purchasing as needed, market supply is ample, and the market is operating in a consolidating manner. 3 Price Prediction The pressure on costs remains unabated, downstream purchasing is on-demand, and the market supply is ample. It is expected that the domestic PA66 market will stabilize in the short term.

1 Today's Summary ①、On July 31, OPEC+ may continue to increase production significantly in September, leading traders to take profits and causing international oil prices to decline. NYMEX crude oil futures September contract fell by $0.74 per barrel to $69.26, down 1.06% month-on-month; ICE Brent crude futures September contract dropped $0.71 per barrel to $72.53, down 0.97% month-on-month. China's INE crude oil futures main contract 2509 rose 8.2 to 532 yuan per barrel, then fell 3.8 to 528.2 yuan per barrel in the night session. ②. Today, the domestic PA66 capacity utilization rate is 60%, with a daily production of approximately 2,300 tons. Despite cost and demand pressures, the capacity utilization rate of domestic polymer 66 enterprises remains stable. However, downstream demand is average, and the domestic PA66 industry has an ample supply of goods. 2 Spot Overview Table 1 Summary of Domestic PA66 Prices (Unit: RMB/ton) Market Specification 7 31st of the month August 1st Change in Value Price Change Range East China EPR27 15600 15600 0 0% Key upstream East China Adipic acid 7100 7125 +25 +0.35% Data source: Longzhong Information Based on the Yuyao market in East China, today's EPR27 market price is referenced at 15,500-15,700 RMB/ton, remaining stable compared to yesterday's price. 。 The raw material adipic acid fluctuated and rose, with cost pressure remaining high. Downstream buyers mostly purchased as needed, and the market supply was ample, leading to a stable market operation. Figure 1 Domestic PA66 Price Trend Chart in 2025 (RMB/ton) Figure 2 2025 Domestic PA66 East China Price Trend Chart (Yuan/ton) Data source: Longzhong Information Data Source: Longzhong Information 3 Production Dynamics Today, the domestic PA66 enterprises' capacity utilization rate is about 60%, and the industry's supply of goods is stable. In terms of profit, the raw material adipic acid is fluctuating higher, resulting in significant cost pressure. The domestic PA66 market price is running in an adjusted manner, and the market continues to experience a loss situation. Figure 5: Trend of Domestic PA66 Capacity Utilization Rate for 2024-2025 Figure 6 Comparison Chart of Domestic PA66 Profit and Price in 2025 (Yuan/Ton) Source of data: Longzhong Information Data source: Longzhong Information 4 Price prediction The pressure on costs remains unchanged, and downstream purchases are made as needed.Market supply is sufficient. The domestic PA66 market is expected to consolidate in the short term. 5 Relevant Product Information Butadiene Market: In the central Shandong region, the mainstream delivery price of butadiene is around 9,200 yuan/ton, with a month-on-month increase of 50. Supplier prices remain stable, supporting firm offers from intermediaries. Some downstream buyers are gradually following up on demand. The information on the supply side remains unclear for the future, so sellers have no intention to lower prices for now. Adipic Acid Market: The reference price for adipic acid in the East China market is 7,000-7,200 RMB/ton delivered on acceptance, remaining stable compared to yesterday.Adipic Acid MarketHigh-level fluctuations. Benefits on the supply side still exist, and middlemen are offering firm prices at high levels. The intention to buy from the terminal market is generally weak, and actual transactions remain to be observed. 6 Data Calendar Table 2 Overview of Domestic PA66 Data (Unit: 10,000 Tons) Data Release Date Previous Data The trend for this period is expected Capacity Utilization Rate Thursday 11:30 AM 60% → Weekly Output Thursday 4:00 PM 1.59 → Data Source: Longzhong Information Remarks: 1 “↓↑” are regarded as significant fluctuations, highlighting data dimensions with a change rate exceeding 3%. 2 Interpret ↑ and ↓ as narrow fluctuations, highlighting data with price changes within 0-3%.  

1 Today's Summary Thursday International Crude Oil Decline ， ICE Brent crude oil futures September contract at 72.53, down 0.71 USD/barrel. ②、 The raw material Bisphenol A East China market closed at 8000. Yuan/ton, stable month-on-month. ③. As the weekend approaches, there have been no new ex-factory price adjustments from domestic PC manufacturers. 2 Spot Market Overview The domestic PC market remained in a low-level weak consolidation today. As of the afternoon close, mainstream negotiations for low-end injection molding grades in East China were referenced at 10,250-13,750 yuan/ton, while mid-to-high-end negotiations were at 14,500-15,300 yuan/ton. The mainstream focus was roughly stable compared to yesterday, with individual focus slightly lower by 50 yuan/ton. Approaching the weekend, domestic PC factories have not announced any new ex-factory price adjustments, and the overall industry production and sales situation remains weak. In the spot market, East and South China mainly experienced stagnation and consolidation. Although current PC prices have basically reached historically extreme low values, and upstream raw materials have been continuously pushing up recently, this has not significantly boosted market sentiment. The intense supply-demand contradiction in the industry persists, with many holders taking a wait-and-see approach and continuing to be bearish. Downstream demand for immediate purchases shows no improvement, and trading remains sluggish. Figure 1: East China PC Market Price Trend Chart (Unit: Yuan/Ton) Figure 2 Domestic PC Price Trends in Various Regions (Unit: RMB/ton) Data source: Longzhong Information Data Source: Longzhong Information 3 Production Updates Today, the operating rate of domestic PC factories is at 80.44%. The price of raw material bisphenol A in the East China market remains stable at 8,000 yuan/ton. The gross profit level of the domestic PC industry is stable compared with the previous working day, at -600 yuan/ton. Figure 3: Domestic PC Weekly Capacity Utilization Rate Trend Chart Figure 4 Domestic PC Profit and Price Comparison Chart (unit: yuan/ton) Data Source: Longzhong Information Data Source: Longzhong Information 4 Price Prediction As the weekend approaches, domestic PC market news remains subdued, with factories showing no new ex-factory price adjustments. The limited increase in raw material bisphenol A offers little boost to PC market sentiment.The market is mainly undergoing weak consolidation at low levels; looking ahead to next week, strong supply and demand pressure remains the main factor driving the direction of the PC market. It is expected that the domestic PC market will continue its sluggish trend, with attention focused on the latest price adjustments from factories at the beginning of the week. 。 5 Related Product Information Bisphenol A Market In the East China region, the price of bisphenol A closed at 8,000 yuan/ton today, with a range of 8,000-8,000 yuan/ton, remaining stable compared to the previous trading day, in line with early morning expectations. The East China bisphenol A market is operating firmly today. Currently, the operating rate of the bisphenol industry is low, and spot supply is tight. Holders have a tendency to support prices, leading to higher offers. However, downstream purchasing enthusiasm is low, making it difficult to accept high prices, resulting in few transactions within the market and little change in the focus of mainstream negotiations. 。 6 Data Calendar Table 2 Domestic PC Data Overview (Unit: Yuan/ton) Data Release Date Previous data The trend for this period is expected Capacity utilization rate Thursday 4:30 PM 80.44% ↗ Weekly PC Profit Thursday 4:00 PM -507 ↘ Data source: Longzhong Information Remark: 1. Consider ↓↑ as significant fluctuations, highlighting data dimensions with a change exceeding 3%. 2. ↗↘ are considered narrow fluctuations, highlighting data with a change range within 0-3%.

1. Today's Summary ①. Domestic material manufacturers currently have no inventory pressure. 。 ②. There are many price-supporting activities in the market. 2 Spot Overview Table 1 Summary of Domestic POM Prices (Unit: RMB/ton) market Specifications July 31 August 1st Change in Value Change Rate Yuyao Cloud Sky Chemical M90 11000 11000 0 0.00% Dongguan Yuntianhua M90 10000 10000 0 0.00% North China Yuntianhua M90 11000 11000 0 0.00% Data source: Longzhong Information Based on the Yuyao region, the current price of Yun Tianhua M90 is 11,000 yuan/ton, remaining stable compared to the previous period. Today, the POM market saw mixed price movements. The fundamentals provided strong support, with ex-factory prices for domestic materials rising. Mainstream offers remained relatively firm, and prices for some grades increased slightly by around 100 yuan/ton. Imported materials continued to decline, with some prices dropping by 200-300 yuan/ton. As of market close, the tax-inclusive price of domestic POM in the Yuyao market was 8,100-11,200 yuan/ton, while the cash price in the Dongguan market was 7,300-10,400 yuan/ton. Figure 1: Domestic POM Price Trend Chart (Yuan/ton) for 2024-2025 Figure 2: 2024-2025 Domestic POM Regional Price Trend Chart (Yuan/Ton) Source of data: Longzhong Information Data source: Longzhong Information 3 Production Dynamics The domestic POM capacity utilization rate this week is 92.04%, an increase of 2.15% compared to last week's operating rate. The 40,000-ton/year POM unit at Tianjin Bohua is shut down for maintenance, while POM units from other manufacturers are operating steadily. This week, maintenance losses have decreased, resulting in an increase in operating rates. Methanol prices rise, POM prices decline. As a result, the product's gross profit margin declined significantly, reducing the profit margin by 247 yuan per ton. Figure 3: Trend Chart of Domestic POM Capacity Utilization Rate in 2024-2025 Figure 4 Comparison of Domestic POM Profit and Price for 2024-2025 (Yuan/Ton)   Data source: Longzhong Information Data source: Longzhong Information 4. Price Forecast This week, inventories from various manufacturers were released in a concentrated manner, and ex-factory prices of some domestic materials were collectively raised. Market participants’ sentiment has been largely boosted, resulting in a relatively firm market trend. Some individual offers may even continue to rise. End users exhibit a “buy on the rise, not on the fall” mentality, with some engaging in demand-based replenishment. However, due to insufficient operating rates at downstream factories, follow-up procurement remains relatively limited. According to Longzhong’s forecast, the domestic POM market is expected to run on the strong side in the short term. 5 Relevant product information: Methanol:The current methanol spot price index is 2186.05, an increase of 1.13. The spot price in Taicang is 2385, down by 10, while the price in North Inner Mongolia is 2065, up by 5. According to Longzhong's monitoring of prices in 20 major cities, prices in 9 cities have fallen to varying degrees, with decreases ranging from 5-25 yuan/ton. The methanol market in Northwest China continues to rise locally today, influenced by the scheduled maintenance of some olefin methanol plants, leading to an improved trading atmosphere. Some companies continue to auction and sell, pushing transaction prices higher. This has driven up trade rerouting prices simultaneously, although the main sales area in Lubei still employs price suppression despite following the trend. In the short term, supported by tightened supply, the market is likely to maintain a strong and volatile operation. 6 Data Calendar Table 2 Overview of Domestic POM Data (Unit: 10,000 tons) Data Release Date Previous Data Current Trend Forecast Capacity utilization rate Thursday 17:00 92.04% ↗ Production Profit Margin Thursday 17:00 0.78% ↘ Data source: Longzhong Information Remark: 1. ↓↑ is considered a significant fluctuation, highlighting data dimensions with a change of more than 3%. 2. ↗↘ are regarded as narrow fluctuations, highlighting data with a rise or fall range within 0-3%.  

1 Today's Summary ①、 The PMMA particle market remains stable today. ②、 Today, the domestic utilization rate of PMMA particles remains at 64%. 2 Spot Overview Based on the East China region, today's PMMA particles closed at 13,000. Yuan/ton,Stable compared to the previous working day, in line with morning expectations. 。 IntradayThe raw material MMA has seen a slight increase, but the cost support is limited. The enthusiasm for inquiries from downstream remains low, and the trading atmosphere has not improved. Sellers are quoting prices along with the market, and market participants hold a strong wait-and-see attitude. Actual transaction prices fluctuate and consolidate within a range, with low prices occasionally heard on the floor. 。 Figure 1 Domestic PMMA Price Trend Chart in 2025 (Yuan/Ton)   Data source: Longzhong Information   3 Production Updates The capacity utilization rate of PMMA particles is at 64%, with no change from the previous period. The factory equipment operation remains stable for the time being. Figure 2      Trend Chart of Domestic PMMA Particle Capacity Utilization Rate   Data source: Longzhong Information   4 Price prediction The follow-up strength of raw material prices is limited, and the market mainly maintains a stalemate and cautious wait-and-see attitude. Downstream end-users only maintain rigid demand purchasing. The current market price is close to the bottom price, so I am holding the goods. Lack of intention for low business report ， The on-site actual transaction for rigid demand is being carried out. In the short term, the downward range of PMMA is narrowing. 5 Related product information MMA Market: Based on the East China region, today's MMA closed at 9,425 yuan/ton, up 75 yuan/ton from yesterday, exceeding this morning's expectations. Today in ChinaMMA MarketPrices are rising, shipments are delayed, and with some installations in East China under maintenance, factory quotations are being raised, causing the trade market to rise accordingly. Downstream buyers are cautiously following suit. 6 Data Calendar Table 2 Overview of Domestic PMMA Particle Data (Unit: 10,000 tons) Data Release Date Previous Data This period's trend forecast PMMA particle industry capacity utilization rate Thursday 5:00 AM 64% → Profit Thursday 5:00 PM 2005 ↘ Data source: Longzhong Information Note: 1. ↓↑ is regarded as significant fluctuation, highlighting data dimensions with a price change exceeding 3%. 2. ↗↘ are regarded as narrow fluctuations, highlighting data with price changes within the range of 0-3%.  

1 Today's Summary The PBT manufacturer's quotation remains stable. There are fewer PBT unit overhauls this week. ③ The PBT production for this period is 22,600 tons, a decrease of 500 tons from the previous period, representing a decline of 2.16%. The capacity utilization rate is 53.14%, down by 1.32% compared to the previous period. This week's average gross profit of domestic PBT is -548 RMB/ton, down 44 RMB/ton from the previous week. 。 2 Spot Overview Table 1 Domestic PBT Price Summary (Unit: RMB/ton) Market Specification 2025/07/31 2025/08/01 Change in value Change in Price Percentage East China Medium-low viscosity pure resin 7800-8300 7800-8300 0/ 0 0%/ 0% Key upstream East China PTA 4826 4740 -86 -1.78% East China BDO (Sprinkler) 8100-8200 8000-8200 -100 / 0 -1.23% / 0% Data Source: Longzhong Information   The mainstream price of medium and low viscosity PBT resin in the East China region is 7800-8300 yuan/ton today, remaining stable compared to the previous working day.Today, the PBT market is weak and cautious, the PTA market is under pressure and falling, and the BDO market continues to decline. The raw material side continues to weaken, with the PBT market observing weakly. There is an increased mentality of promoting transactions at low prices within the market, and the market focus is weak. According to Longzhong Information, the price of low-viscosity PBT pure resin in the East China market is 7,800-8,300 RMB/ton. 3 Production Dynamics The PBT production for this period is 22,600 tons, a decrease of 500 tons compared to the previous period, with a decline rate of 2.16%. The capacity utilization rate is 53.14%, down by 1.32% from the previous period. During the week, the PBT plant at Nantong Xingchen underwent maintenance, and the PBT plant at Changhong Bio reduced its load, leading to a decrease in domestic PBT supply. 。 The average domestic PBT gross profit this week is -548 RMB/ton, down 44 RMB/ton from the previous week. 。 Figure 2: Trend Chart of Domestic PBT Capacity Utilization Rate in 2025 Figure 3 2025 Domestic PBT Profit and Price Comparison Chart (CNY/ton)     Data Source: Longzhong Information Data source: Longzhong Information 4 Price Forecast The PBT market is expected to experience weak fluctuations. On the raw material side, multiple domestic PTA facilities are undergoing maintenance, leading to a significant reduction in supply. However, demand is underperforming, with polyester enterprises' production and sales being average. Coupled with a weakening trend in raw materials, the PTA spot market is expected to continue its weak pattern in the short term. BDO supply and demand pressure is expected to persist next week, and market participants have a strong cautious bearish sentiment. Downstream buyers are following up as needed, and sellers are continuing their selling mindset, with the market focus shifting to the mid-to-low end. The weakening support from raw materials continues to negatively impact the PBT market sentiment, potentially leading to increased supply-side discounting operations. The market focus is expected to experience weak fluctuations. Therefore, Longzhong anticipates that next week, the East China market for low to medium viscosity PBT resin will be priced at 7,700-8,200 yuan/ton. 5 Related product information PTA Market: Today's PTA spot price is down 86 to 4740. For August main port delivery, transactions occurred at a discount of 10-15, while for September main port delivery, transactions were flat with the September contract. Weak cost and weak expectations constrained the market, leading to a volatile decline in absolute prices during the day. Mainstream suppliers were selling, and the spot basis continued to be relatively weak, though market negotiations were acceptable. (Unit: RMB/ton) BDO Market: As of press time, mainstream spot bulk negotiations in East China are at 8000-8200 yuan/ton, and barrel negotiations are at 9000-9200 yuan/ton (delivered upon acceptance), with the lower end down by 100 yuan/ton compared to yesterday. Today, the BDO market in East China is experiencing a downward fluctuation. The market lacks favorable support, and industry participants are cautiously bearish. The downstream actual orders are limited and negotiable, and the holders are selling at a discount, leading the market to continue declining. 。 6 Data Calendar Table 2 Overview of Domestic PBT Data (Unit: Ton, Yuan/Ton) Data Publication Date Previous Data Forecast for This Period PBT Capacity utilization rate Thursday 5:00 PM 54.46% - PBT Weekly Production Volume Thursday 5:00 PM 23,100 tons - PBT Weekly Profit Thursday 5:00 PM -504 yuan/ton ↘ Data Source: Longzhong Information Note: 1 Consider significant fluctuations as substantial when highlighting changes exceeding a 3% increase or decrease. 2 Considered as a narrow fluctuation, highlighting data with a rise and fall range within 0-3%.  

1 Today's Summary The settlement price of Sinopec's high-end caprolactam for July 2025 is 9,060 yuan/ton (liquid premium grade, six-month acceptance, self pick-up), down 660 yuan/ton compared to the June settlement price. ②、 Sinopec's pure benzene prices at refineries in East China and South China increased by 100 yuan per ton, now set at 6,050 yuan per ton, effective from July 29. 2 Spot Overview Table 1 Domestic Polyamide 6 Price Summary (Unit: RMB/ton) Market Specification 7 Month 31st August 1st Change in value Payment Terms Conventional spinning and cutting of polyamide 6 Ex-factory Price (Standard) 9100-9400 9150-9550 +50/+150 Cash Ex-Factory Ex-factory Price (High-end) 9300-9800 9400-10000 +100/+200 Cash Ex-factory East China Market (Ordinary) 9300-9600 9350-9750 +50/+150 Delivered to East China East China Market (High-end) 9300-9800 9400-10000 +100/+200 East China Self Pickup Polyamide 6 high-speed spinning chips East China Spot (Regular) 9200-9400 9300-9500 +100/+100 Spot remittance from factory East China Spot (Premium) 9600-9900 9800-10200 +200/+300 Acceptance delivered Key upstream Caprolactam East China 8975 8975 0 Acceptance delivered Data source: Longzhong Information Today, the market price of polyamide 6 increased as the supply of raw material caprolactam decreased in some areas, leading to a firm market price. The profit from slices is under pressure due to high costs, prompting polymerization companies to follow suit and raise the price of slices. However, the downstream market sentiment is becoming cautious, resulting in average overall market transactions. In East China, the typical cash short delivery price for regular spinning of PA6 is 9,350-9,750 yuan/ton, while high-speed spinning spot goods are priced at 9,800-10,200 yuan/ton for acceptance delivery. In Chaohu, the cash self-pickup price is 8,700-8,800 yuan/ton. 3 Production dynamics 1 The capacity utilization rate of polyamide 6 is 80.51%. 2 The profit for conventional spinning of polyamide 6 is -225 RMB/ton, and for high-speed spinning, it is -180.25 RMB/ton. Figure 3 Domestic Polyamide 6 Capacity Utilization Rate Trend Chart Figure 4: Comparison of Domestic Polyamide 6 Profit and Price (Unit: Yuan/Ton) Data source: Longzhong Information Data Source: Longzhong Information 4 Price prediction From the cost perspective, the caprolactam market is experiencing significant cost and supply pressures, which may lead to continued strong market performance, while pressure on chip costs remains. From the supply and demand perspective, the operating rate of domestic polymerization enterprises is slowly increasing, with plans for new capacity to be introduced, ensuring sufficient supply. However, downstream sentiment is becoming increasingly cautious, and it is expected that the PA6 market will undergo slight adjustments in the near future. 5 "Related product information" ①、 Caprolactam Market: Today, the spot price of caprolactam in East China is 8,950-9,000 yuan/ton, with some offers at 9,050 yuan/ton. Costs remain firm and spot supply is decreasing, so enterprises are maintaining firm offers, while downstream buyers are cautious about following up at high prices. ②、 Nylon Filament Market: The market price of nylon POY 85D/24 in the Jiangsu, Zhejiang, and Fujian areas is 11,600-12,200 yuan/ton. Some offers are slightly higher, driven by low costs, making it difficult for companies to trade at high offer prices. The overall negotiation for nylon yarn is based on just-in-need demand, and the industry is experiencing marginal profits. 6. Data Calendar Table 2 Overview of Domestic Polyamide 6 Data (Unit: 10,000 tons, RMB/ton, days) Data Publication Date Previous period data This period's trend is expected Capacity Utilization Rate Thursday 4:00 PM 79.01% ↗ Weekly Output Thursday 4:00 PM 13.13 ↗ Conventional Spinning Profit Thursday 4:00 PM -206 ↘ Conventional Spinning Inventory Thursday 4:00 PM 6.5 ↗ Data source: Longzhong Information Note: 1 “↓↑” are regarded as significant fluctuations, highlighting data dimensions with price changes exceeding 3%. 2 Considered as narrow fluctuations, highlighting data with changes within 0-3%.  

1 Today's Summary 1. Factory prices reduced by 40-100. (Unit: Yuan/ton) ②. Today, the domestic polyester bottle chip capacity utilization rate is 70.89%. 2 Spot Overview Table 1: Summary of Domestic Polyester Bottle Chip Prices (Unit: RMB/ton) Market Specifications 7 31st of the month August 1st Change in value Percentage change East China Aquarius class 5990 5950 -40 -0.67% South China Aquarius-class 6050 6000 -50 -0.83% North China Aquarius class 5960 5920 -40 -0.67% The spot price of polyester bottle-grade chips in East China closed at 5,950 today, down 40 from the previous working day, in line with the morning forecast. Crude oil and raw materials have declined, and polyester bottle chip factories have reduced their quotations by 40-100. Transactions for August-September sources are between 5970-6000, with downstream and traders replenishing at lower prices. The market focus has subsequently shifted downward, it is heard. In August, the supply traded at 5890-6000 or futures contract 2509 with a discount of 20 to a premium of 60, with transactions in September at 5890-5960, indicating a significant improvement in trading activity. ==(Unit: yuan/ton) Figure 1: Price Trend Chart of Domestic Polyester Bottle Chips in 2025 (Yuan/Ton) Figure 2: Price Trend Chart of Domestic Polyester Bottle Chips in 2025 (CNY/ton)                            Data Source: Longzhong Information Data Source: Longzhong Information 3. Production Dynamics Today, the capacity utilization rate of polyester bottle chips has reached 70.89%. In terms of profit, the price of raw material PTA fell by 86 to 4,740, the price of MEG fell by 12 to 4,480, polymerization cost increased to 5,572.46, and the profitability of polyester bottle chips resulted in a loss of -222.46 yuan/ton. Figure 3: Trend Chart of Domestic Polyester Bottle Chip Capacity Utilization Rate for 2024-2025 Figure 4: Comparison of Profit and Price of Domestic Polyester Bottle Chips in 2025 (Yuan/Ton) Data Source: Longzhong Information Data Source: Longzhong Information 4. Market Sentiment Table 2: Sentiment Expectations of Domestic PET Bottle Chip Industry Participants Upstream and Downstream (Updated on Monday) Perspective Quantity Proportion Month-on-month Bullish 6 24% 4% Bearish 14 56% 8% Unchanged 5 20% -12% 5. Price Prediction From the supply side, there are currently no facility restarts, so the supply is stable. From the demand side, downstream maintains just-in-time replenishment, and the replenishment pace remains at buying on dips. Spot circulation is relatively sufficient, and with raw material drag, the polyester bottle chip market may remain sluggish.The polyester bottle chip spot for water bottles is expected to be 5900-6000 in the East China market next week, with attention to changes in raw materials (unit: RMB/ton). 6. Related Product Information PTA Market: The PTA price in the East market has dropped, with negotiations referenced around 4745. The main port delivery in August is quoted at a discount of 5-10 for September, with bidding at a discount of 10-15. For September main port delivery, the quote is at a discount of 5-0 for September, with bidding around a discount of 10. Weak costs and weak expectations have led to weak absolute price fluctuations in the morning, with the spot basis being weak and market negotiations being light. (Unit: RMB/ton) MEG Market ： MorningEthylene Glycol MarketIn the event of a pullback, the spot price in Zhangjiagang opened around 4485 in the early trading session. During the session, it showed weakness, with negotiation ranges running between 4480-4490. By midday closing, the spot price was being discussed around 4480. The spot basis strengthened to run in the range of 09+70 to 09+75. The South China market remained weak and stable, with petroleum-grade delivered prices quoted around 4500. Buyers were mainly in a wait-and-see mode. The dollar market weakened, with morning negotiations for near-month cargoes in the range of 522-524, with no transactions heard. 7. Data Calendar Table 3 Overview of Domestic Polyester Bottle Chip Data (Unit: 10,000 tons, %) Data Publication Date Previous Data The trend for this period is expected Capacity utilization rate Weekday 17:00 70.89% ↘ Weekly Production Thursday 5:00 PM 32.23 ↘ Weekly Capacity Utilization Rate Thursday 5:00 PM 70.58% ↘ Data Source: Longzhong Information Note: 1 Consider significant fluctuations as those exceeding 3% in terms of increase or decrease, highlighting the data dimensions with such changes. 2 Considered as narrow fluctuations, highlighting data with a range of change within 0-3%.  

1 Today's Summary Today, the East China GPPS closed steadily at 7,830 yuan/ton. ②、 On Friday, the East China market for styrene fell by 25 to 7,350 yuan/ton, South China fell by 20 to 7,415 yuan/ton, and Shandong fell by 15 to 7,190 yuan/ton. 2 Spot Overview Table 1 Summary of Domestic PS Prices (Unit: RMB/ton) market Specifications Today's Price Change in Value Change Rate Ningbo East China GPPS - Green Anqing Peak 7830 0 0% Yuyao East China HIPS-CyberLong 8680 -20 -0.23% Shantou South China GPPS - Renxin 7550 -30 -0.4% Shantou South China HIPS-Starlight 8470 0 0% According to Longzhong Information, East China's GPPS remained stable at 7,830 yuan/ton today.The upstream styrene market shows a weak trend with moderate cost support. Industry supply has slightly recovered, while downstream demand remains sluggish. Market transactions are average, with price reductions mainly used to drive sales. Figure 1: Domestic PS Price Trend Chart for 2023-2025 (Yuan/Ton) Figure 2 Domestic Styrene Price Trend Chart for 2023-2025 (Yuan/ton) Source of data: Longzhong Information Data Source: Longzhong Information 3 Production Updates Table 2 Latest Developments of PS Production Units in China (Unit: 10,000 tons/year) Data Annual production capacity Latest Updates Lianyungang Petrochemical 40 6 Parking for maintenance on the 25th of the month. The maintenance is expected to take about 20-25 days. Anhui Device 12 6 Parking and maintenance on the 27th of the month Guangxi Device 10 6 End-of-month parking maintenance Huizhou Device 30 7 Increased to 3 lines on the 8th of the month Shantou Facility 30 7 Line 1 will be reduced from April 4th, and will be stopped for maintenance on July 8th. Lianyungang Petrochemical 40 7 Around the 20th of the month, the restart will gradually begin. Zhanjiang Unit 10 7 Line 1 will be reduced to operation from June 20 and will resume on July 28. 4 Price Forecasting The raw material styrene is fluctuating at a low level, providing moderate cost support. The industry's production is slightly recovering from a low level, and there is just-in-need procurement from downstream. In the short term, the PS market may consolidate weakly. It is expected that the East China market for transparent modified benzene will be around 7,800-8,700 RMB/ton. 5 Data Calendar Table 3 Overview of Domestic PS Data (Unit: Ten Thousand Tons) Data Release Date Previous period data Current Trend Forecast PS Capacity Utilization Rate Thursday 2:00 PM 53.3% ↗ PS Enterprise Inventory Thursday 4:00 PM 8.4 ↘ Data Source: Longzhong Information Remarks: 1 Treat "", "↓", and "↑" as significant fluctuations, highlighting data dimensions where the price change exceeds 3%. 2 Consider ↗↘ as narrow fluctuations, highlighting data with price changes within 0-3%.  

1. Today's Summary Domestic PVC manufacturers have reduced the ex-factory price by 30-120 yuan/ton. ② In the short term, the number of enterprises undergoing maintenance has rapidly decreased, and the market supply is expected to increase quickly. ③. The Politburo meeting has once again reaffirmed its determination to combat "involution": advancing capacity management in several key industries, with the PPI expected to rebound in the second half of the year. 2 Spot Overview Based on the Changzhou market in East China, today's cash ex-warehouse price of acetylene-based PVC type 5 in East China is 4,920 yuan/ton, down 30 yuan/ton compared to the previous trading day. 。 The domestic PVC spot market price focus fluctuated and declined. Without policy or macro expectations support, the market price returned to the fundamentals. During the week, upstream PVC supply steadily increased, demand improvement was limited, industry inventory continued to accumulate for more than five weeks, and spot prices were under pressure. In East China, the acetylene process five-type spot price ranged from 4,820 to 5,000 yuan/ton, while the ethylene process held steady at 4,950 to 5,200 yuan/ton. Figure 1 Domestic PVC Price Trends (Unit: RMB/ton) Figure 2 Domestic PVC Price Trend Chart by Region (Unit: Yuan/ton) Source of data: Longzhong Information Source of data: Longzhong Information 3、 The basis between futures and spot prices Table 2 Main Delivery Location Basis (Yuan/ton) Region The previous trading day Today Rise and fall Month-on-month East China (September 2009 Contract) -100 -120 -20 -20% Data Source: Longzhong Information From the perspective of the basis, the PVC basis for the September contract in the East China region is in the range of -60 to -160, while the January contract is in the range of -180 to -240. 4、 Production Dynamics Formosa Plastics Taiwan Mailiao Plant plans maintenance in mid to late August. 。 Figure 4 Domestic PVC Maintenance Loss and Price Linkage Trend Chart Figure 5 Comparison of PVC Capacity Utilization Rate and Price Source of data: Longzhong Information Data source: Longzhong Information 5、Price forecast From a fundamental perspective, next week the maintenance intensity of domestic PVC producers is expected to ease, with the scale of new maintenance being lower than that of plant restarts and new production. Output will continue to recover, while domestic demand remains in the off-season. New export orders are limited by weak off-season demand and policy impacts from India. Industry inventories are expected to continue accumulating, putting pressure on spot prices. Considering the lack of short-term policy stimulus, the spot market is expected to fluctuate downward. The expected price for East China acetylene-based PVC type 5, cash ex-warehouse, is 4,750-4,900 yuan/ton. 6、 Related Products Calcium carbide ： The domestic calcium carbide market is exploring lower positions, with the mainstream trade price in the Wuhai region at 2150-2200 yuan/ton. The diversion of supporting calcium carbide to external sales is impacting the market. 。 Ethylene ： Asian Market CFR Northeast Asia 820 USD/ton stable, CFR Southeast Asia 830 USD/ton stable 。 7、Data Calendar Table 4 PVC Data Calendar Overview Data Release Date Previous Data Trend Forecast PVC utilization rate Thursday 5:30 PM 76.84% ↗ PVC Weekly Production Thursday 5:00 PM 45.23 ↗ PVC manufacturer plant warehouse inventory Thursday 5:00 PM See data terminal ↗ PVC Third-Party Social Inventory Thursday 5:00 PM 72.21 ↗ PVC production enterprises export volume Friday 12:00 AM See data terminal ↘ Operating Rate of Downstream PVC Product Enterprises Friday 5:00 PM View data terminal ↗ Source: Longzhong Information Note: 1. ↓↑ is regarded as significant fluctuation, highlighting data dimensions with a change in amplitude exceeding 3%. 2. ↗↘ are regarded as narrow fluctuations, highlighting data with price changes within the range of 0-3%.  

1. Today's Summary OPEC+ may continue to significantly increase production in September, leading traders to take profits and causing international oil prices to fall. NYMEX crude oil futures for the September contract fell by $0.74/barrel to $69.26, a decrease of 1.06% compared to the previous period; ICE Brent crude futures for the September contract fell by $0.71/barrel to $72.53, a decrease of 0.97% compared to the previous period. ②、 The HD PE market price change range is -5 to -6 yuan/ton, the LDPE market price is -1 yuan/ton, and the LLDPE market price is -7 yuan/ton. 2. Spot Overview Macro messages have been gradually digested, with no further boost, and support from the cost side has weakened. The spot market is relatively well-supplied, with slight concessions made to facilitate transactions, leading to a downward shift in price focus and weak trading. Currently, the market is driven by macro sentiment, with a relatively strong mentality. However, from a fundamental perspective, there is no significant improvement in supply, and pressure remains, while the demand side is recovering slowly, making it difficult to generate effective upward momentum. Therefore, a slight consolidation is expected to be the main trend. The HDPE market price fluctuated by -5 to 6 yuan/ton, the LDPE market price by -1 yuan/ton, and the LLDPE market price by -7 yuan/ton. 3 ========: Basis The main LL contract fluctuated downward, opening at 7,344 yuan/ton. By 15:00, the closing price was 7,317 yuan/ton, a decrease of 52 yuan compared to the previous settlement price. The trading volume was 220,500 contracts, and the open interest was 313,100 contracts, a decrease of 13,800 contracts. Today's futures-spot basis was -97 yuan/ton, an increase of 3 yuan/ton compared to the previous working day. 4 Production Dynamics Capacity utilization rate by The change from 80.38% to 82.59%. The cost of oil production is 8035 yuan/ton; the profit from oil production is -685 yuan/ton; the profit from coal production is 1010 yuan/ton. Graph 3   Domestic Polyethylene Capacity Utilization Trend Graph 4   Comparison of Domestic Polyethylene Profit and Price (Yuan) /ton) Data source: Longzhong Information Data Source: Longzhong Information 5 Market sentiment Table Sentiment Expectations of Domestic Polyethylene Upstream and Downstream Practitioners Date Bearish Bullish Steady look This week 26.7% 15.8% 57.4% Last week 32.2% 5.0% 62.9% Rise and fall -5.5% 10.9% -5.4% Data Source: Longzhong Information Note: The above data is updated every Thursday. 6. Price Forecast Short-term During the off-season, the rebound in demand is limited, and downstream purchasing volume is not large, maintaining only necessary demand. The impact of the news is gradually dissipating, and the market atmosphere is turning dull. Therefore Next week Polyethylene Market Price Fluctuating downward Mainly. 7. Related Product Information Crude Oil Market: The main trading logic of the international crude oil market has not changed. The positive factors come from the continuation of U.S. sanctions policies against oil-producing countries and the ongoing traditional peak consumption season in the U.S., while the negative factor is the easing of geopolitical tensions compared to earlier periods. OPEC+ maintains its stance on increasing production amid a weak global economy. Today, some economic data from Europe and the United States will be released in quick succession. Based on the expected values, they may still show signs of weakness. Coupled with the market's attention starting in early August on OPEC+'s production increase plan for September, it is anticipated that... Tomorrow International oil prices will show Decline Situation. 8. Data Calendar Table 3   Domestic Polyethylene Data Overview Table (Unit: 10,000 Tons) Data Release Date Previous Data The trend for this period is expected PE Production Enterprise Total Inventory (10,000 tons) Wednesday 17:00PM 43.28 ↘ PE Social Sample Warehouse Inventory Tuesday 17:00PM 1.79% ↗ PE Weekly Production (10,000 tons) Thursday 17:00PM 63.55 ↗ PE Maintenance Impact Volume (10,000 tons) Thursday 17:00PM 9.14 ↘ PE Weekly Capacity Utilization Rate Thursday 17:00PM 81.97% ↗ PE downstream industry capacity utilization rate Thursday 17:00PM 0.31% ↗ PE Mindset Survey Thursday 12:00AM 10.89% ↗ Data source: Longzhong Information Note: 1. Consider a significant fluctuation as a substantial rise or fall, highlighting data dimensions with a change exceeding 3%. 2. ↗↘ are considered narrow fluctuations, highlighting data with a rise or fall within 0-3%. The above data is updated every Thursday.  

International News Guide: Raw Materials - EVONIK Releases Q2 2025 Earnings Report: Declining Demand Impacts Performance Automotive - ZF Announces Mass Layoffs and Pay Cuts! 12,000 Employees Protest on Streets Packaging -BioLogiQ Receives $5 Mn Grant to Develop Innovative Packaging for Fresh Produce Medical - French Medtech Molding Connection for D&M Plastics Electronics - APPLE Releases Q3 2025 Fiscal Year Earnings Report: iPhone Sales Surpass 3 Billion Units, China Market Returns to Growth Construction - ORIENTAL YUHONG Plans to Acquire Leading Chilean Building Materials Retailer for RMB 880 Million Macro - JAPAN Insists on U.S. Fulfillment of Bilateral Agreement, Urges Immediate Tariff Reduction on Automobiles and Parts Price - Ethylene Asia: CFR Northeast Asia $820/tonne; CFR Southeast Asia $830/tonne   International News Details: 1. EVONIK Releases Q2 2025 Earnings Report: Declining Demand Impacts Performance Against an increasingly challenging economic environment, EVONIK INDUSTRIES AG reported an adjusted EBITDA of €509 million for Q2 2025, a 12% decrease compared to the strong performance in the same period last year. Over half of the decline in Q2 sales was attributed to unfavorable exchange rate fluctuations and the divestiture of the superabsorbent business, which was still part of EVONIK in the same period last year. Sales volume dropped 4% year-on-year, while product prices remained generally stable. Performance of C4 chain products was below average. Extended maintenance shutdowns of production facilities for products such as polyamide 12 also had a certain impact on sales. EVONIK expects that if the global economy does not deteriorate further, the full-year 2025 adjusted EBITDA will reach the lower end of the forecast range (€2.0 billion to €2.3 billion). 2. U.S. Imposes Largest-Ever Sanctions on IRAN! Involving a Chinese Port Company Recently, the U.S. TREASURY DEPARTMENT’S OFFICE OF FOREIGN ASSETS CONTROL (OFAC) announced sanctions on a shipping network controlled by Iranian businessman Mohammad Hossein Shamkhani, involving over 50 entities, individuals, and more than 50 oil tankers and container ships. This marks the largest-scale sanctions imposed by the U.S. government since its "maximum pressure" campaign against IRAN in 2018. 3. TEIJIN’s Bio-Based Polycarbonate (PC) Used in Organ Pipe Manufacture, Showcased at OSAKA-KANSAI WORLD EXPO   TEIJIN LIMITED announced that its tubes molded from biomass-derived polycarbonate (PC) resin have been used to manufacture the world’s first bio-plastic pipe organ. These transparent tubes were produced by Teiyo Co., Ltd., a subsidiary of TEIJIN LIMITED specializing in plastic molding. This innovative pipe organ will be exhibited in the "Rebirth Challenge" zone of the OSAKA Medical and Health Pavilion during the OSAKA-KANSAI WORLD EXPO in JAPAN from August 19 to 25, 2025. 4. ORIENTAL YUHONG Plans to Acquire Leading Chilean Building Materials Retailer for RMB 880 Million On the evening of July 31, ORIENTAL YUHONG announced that its wholly-owned subsidiaries ORIENTAL YUHONG Overseas Development Co., Ltd. and ORIENTAL YUHONG International Trade Co., Ltd. plan to jointly invest approximately $123 million (about RMB 880 million) with their own funds to acquire 100% equity of Construmart S.A. in Chile from the counterparty. After the transaction is completed, ORIENTAL YUHONG Overseas Development Co., Ltd. will hold 99% of Construmart’s equity, and ORIENTAL YUHONG International Trade Co., Ltd. will hold 1% of Construmart’s equity. 5. French Medtech Molding Connection for D&M Plastics French injection molder Groupe JBT has acquired D&M Plastics, an injection molding firm based in Burlington, IL, primarily serving the healthcare sector. The acquisition announced earlier this month will enable JBT to deliver reliable, localized services to its North American customer base, especially in terms of ISO Class 7 cleanroom production needs, the company said. 6. BioLogiQ Receives $5 Mn Grant to Develop Innovative Packaging for Fresh Produce BioLogiQ has been awarded grant funding through the USDA Foreign Agricultural Service’s $5 million Sustainable Packaging Innovation Lab (SPIL) at Clemson University, launched through the Assisting Specialty Crop Exports (ASCE) Initiative.The BioLogiQ/Clemson partnership will develop and commercialize cutting-edge packaging solutions to help U.S. farmers meet evolving global packaging and trade standards. The project will focus on flexible film, pallet wrap, and protective packaging used for fruits, vegetables, nuts, and specialty greens. 7. APPLE Releases Q3 2025 Fiscal Year Earnings Report: iPhone Sales Surpass 3 Billion Units, China Market Returns to Growth On August 1, APPLE released its Q3 2025 fiscal year earnings report for the period ending June 28, with quarterly revenue recording the largest increase since December 2021. The earnings report shows that APPLE’s total revenue in Q3 reached $94.04 billion, a year-on-year increase of 10%, and net profit reached $24.43 billion, a year-on-year increase of 9%. Notably, APPLE’s revenue in the China market during this quarter was $15.369 billion, an increase of 4% compared to $14.728 billion in the same period last year, ending the decline in the previous two quarters and returning to growth. 8. ZF Announces Mass Layoffs and Pay Cuts! 12,000 Employees Protest on Streets German leading automotive parts supplier ZF GROUP recently announced plans to cut approximately 11,000 to 14,000 jobs across GERMANY by the end of 2028. This marks the largest layoff plan in the company’s history, with most layoffs coming from production departments, including R&D staff. In response to the austerity policies and layoff plans, more than 12,000 employees across GERMANY took to the streets to oppose the board’s plan to further cut thousands of jobs and continue to suppress wages. Achim Dietrich, Chairman of ZF’s General Workers’ Union, revealed that if all the management’s demands are implemented, employees will have to give up 25% to 30% of their annual compensation through measures such as shorter working hours, cancellation of one-time bonuses, and reduction of excessive benefits, with significant variations across regions and positions.   Overseas Macro Updates:   JAPANESE Government and Automotive Industry Exchange Views on U.S. Tariffs According to NHK, on the same day, JAPANESE Prime Minister Shigeru Ishiba met with heads of several JAPANESE automotive industry groups to exchange views on the U.S.-JAPAN tariff agreement. JAPANESE automotive industry groups called on the JAPANESE government to provide support for the supply chain and formulate policies to stimulate domestic demand. Masanori Kataoka, Chairman of the JAPANESE AUTOMOBILE MANUFACTURERS ASSOCIATION and Chairman of ISUZU MOTORS LIMITED, stated that he hopes the JAPANESE government will continue dialogue with the U.S. to further reduce tariffs. JAPAN Insists on U.S. Fulfillment of Bilateral Agreement, Urges Immediate Tariff Reduction on Automobiles and Parts On August 1, Chief Cabinet Secretary Yoshimasa Hayashi stated at a press conference that JAPAN will continue to urge the U.S. to fulfill the reached bilateral agreement, including reducing tariffs on automobiles and parts. Hayashi emphasized: "U.S. President Trump has signed an executive order under the U.S.-JAPAN agreement to reduce bilateral tariffs to 15%... The JAPANESE government still insists that the U.S. should immediately take action to implement the agreement terms, especially the tariff reduction measures on automobiles and automotive parts." EU Initiates Anti-Dumping Investigation into Chinese Polyamide Yarns On July 29, the EUROPEAN COMMISSION issued a notice announcing the initiation of an anti-dumping investigation into polyamide yarns originating from China. The dumping investigation period for this case is from July 1, 2024, to June 30, 2025, and the injury investigation period is from January 1, 2022, to the end of the dumping investigation period. A preliminary ruling for this case is expected to be made within 7 months, with a maximum extension of 8 months. JAPAN Plans to Raise Minimum Wage to a New Record High Again A panel of the JAPANESE MINISTRY OF HEALTH, LABOR AND WELFARE plans to recommend a approximately 6% increase in the national average minimum wage for the current fiscal year, which would be the largest increase since 2002. The agency added that the proposed hourly increase of approximately 1118 yen ($7.43) would exceed last year’s 5% increase and be the largest since the current system was implemented, but did not cite sources. The government of JAPANESE Prime Minister Shigeru Ishiba set a target last year to increase the average minimum wage by 42% to 1,500 yen per hour by 2020.   Price Information:   USD/CNY Central Parity 7.1496, down 2 pips; previous trading day’s central parity 7.1494, previous trading day’s official closing price 7.1930, overnight closing price 7.1998. Upstream Raw Materials USD Market Prices Ethylene Asia: CFR Northeast Asia $820/tonne; CFR Southeast Asia $830/tonne. Propylene Northeast Asia: FOB Korea average price $730/tonne; CFR China average price $770/tonne. North Asia frozen cargo CIF price: propane $502-509/tonne; butane $472-479/tonne. South China frozen cargo for second half of August CIF price: propane $540-550/tonne; butane $510-520/tonne. Taiwan region frozen cargo CIF price: propane $502-509/tonne; butane $472-479/tonne. LLDPE USD Market Prices Film: $860-920/tonne (CFR Huangpu); Injection molding: $940/tonne (CFR Dongguan). HDPE USD Market Prices Film: $910/tonne (CFR Huangpu); Hollow: $855/tonne (CFR Huangpu); Pipe: $1,030/tonne (CFR Huangpu). LDPE USD Market Prices Film: $1,070-1,095/tonne (CFR Huangpu); Coating: $1,280/tonne (CFR Huangpu). PP USD Market Prices Homopolymer: $910-965/tonne (CFR Huangpu), up $10/tonne; Copolymer: $920-975/tonne (CFR Nansha); Transparent: $995-1,055/tonne (CFR Huangpu), down $5/tonne; Pipe: $1,160/tonne (CFR Shanghai).

People are increasingly concerned about the environmental impact of key industrial sectors, especially in fields such as construction and transportation, where obtaining materials with good mechanical properties, lighter weight, and higher fire resistance plays a crucial role. In this context, the Plastics Technology Center AIMPLAS is carrying out two projects funded by the Valencian Institute of Competitiveness and Innovation (IVACE+i) and supported by the European Regional Development Fund (ERDF) to sustainably develop new flame-retardant coatings and composites to enhance safety in homes and transportation. Reduce the environmental impact of construction and transportation. On one hand, the main objective of the NEOCOMP project is to develop high-performance flame-retardant composites using advanced manufacturing technologies. This involves producing various parts through innovative industrial processes such as dry fiber placement (DFP) and additive manufacturing. These composites must not only deliver high performance in terms of mechanical strength, durability, and flame retardancy but also make significant contributions to reducing the environmental impact of construction and transportation. Specifically, NEOCOMP will develop flame-retardant thermoplastic adhesives for dry fibers, unidirectional dry fiber tapes for DFP, and continuous reinforced 3D tows. These new manufacturing methods will, on one hand, enable the efficient production of preforms with complex geometries, and on the other hand, will be capable of producing customized composite parts with improved mechanical properties, higher fatigue resistance, and excellent fire resistance. This will bring new opportunities to fields such as construction, automotive, and aerospace. Ziur Composites and IT3D are collaborating on this research to significantly reduce environmental impact and enhance the fire safety of key transportation and construction infrastructure. Flame-retardant coatings made from renewable materials On the other hand, the REFUGI project aims to develop phosphorus-based flame retardants using mechanochemical processes, representing a step towards more environmentally friendly methods. These flame retardants are being integrated into varnish formulations specifically designed for wood. The strategy aims to improve the fire resistance of coatings used in the construction sector. Carolina Acosta, Chief Researcher in Mechanochemistry and Reactive Extrusion at AIMPLAS, explained: "In recent years, the use of flame-retardant varnishes has increased because they offer finishes almost identical to any wood coating while providing greater fire resistance, delaying the spread and impact of fires. We are focusing on exploring different material sources to produce these flame retardants, prioritizing those that are renewable and recyclable." This study was carried out in collaboration with Omar Coatings and Decomader, aiming not only to improve the efficiency of flame retardant production but also to reduce the environmental impact associated with the manufacturing and application of flame retardants. "The application of mechanochemistry in the production of these compounds represents an innovative and promising approach, expanding the possibilities of green chemistry and sustainable manufacturing. We are looking for innovative methods to synthesize flame retardants using processes that minimize solvent use, require fewer resources and reaction time, and maximize efficiency. Additionally, we are researching coating application techniques to enable flame retardants to be distributed evenly and effectively on wood substrates," Acosta added. These two projects are part of the IVACE+i funding program, which is carried out in collaboration between the technology centers and companies of the Valencian Community, intended for non-economic R&D projects in 2024, funded by the EU ERDF under the 2021-2027 operational program.

Achieving transparency and flame retardancy in modified nylon is indeed a technical challenge, mainly because of the following reasons.The objectives of transparency and flame retardancy fundamentally conflict with each other in terms of implementation mechanisms.。 There are several key reasons: The Physical Form of Flame Retardants and Light Scattering Traditional flame retardants are mostly solid particles.The most commonly used and efficient flame retardants (such as halogenated ones, inorganic hydroxides like aluminum hydroxide/magnesium hydroxide, and certain types of phosphorus-based ones) are usually added in the form of solid powders. Refractive index mismatch:The refractive indices of these solid particles are usually different from that of the nylon matrix. When light passes through the material, refraction and scattering occur at the interfaces between the particles and the matrix. Disruption of optical uniformity:Even when the particle size is very small (approaching the wavelength of visible light), a large number of particles can cause strong light scattering, making the material turbid or opaque (similar to a foggy or milky appearance). High loading levels (usually 15-30% or even higher are required to achieve the desired flame retardant effect) exacerbate this problem. 2The Effect of Flame Retardants on the Crystallization Behavior of Nylon Transparent nylon relies on controlling crystallization.Ordinary nylon (such as PA6, PA66) is a semi-crystalline polymer. The refractive indices of its crystalline and amorphous regions are different, resulting in light scattering and giving it a translucent or opaque appearance. Transparent nylon is usually achieved through the following methods: Introducing comonomers disrupts crystalline regularity.Transparent nylons such as PA6/6I and PA6/3-T inhibit extensive crystallization by introducing large side groups or asymmetric monomers, forming small crystalline regions or highly amorphous structures, thereby reducing light scattering. Add nucleating agents to control crystal size.Make the grain size much smaller than the wavelength of visible light (< 400 nm) to reduce scattering. Flame retardant interference with crystallization:Flame retardant particles may: Act as a heterogeneous nucleation site.Promoting crystallization leads to an increase in grain size, which in turn increases light scattering and reduces transparency. Hindering the movement of molecular chains.Inhibit crystallization or alter crystal morphology, but it is usually difficult to precisely control to both maintain high transparency and meet flame retardant requirements. Poor compatibility with the matrix.Incompatible flame retardants form defects at the interface, which are also sources of light scattering. The choice of efficient transparent flame retardants is limited and expensive. ①Liquid flame retardant:Theoretically, liquid flame retardants (such as certain phosphate esters and phosphonate esters) can avoid the scattering problems caused by solid particles if they are well compatible with nylon and have matching refractive indices. Compatibility:It is difficult to find a liquid flame retardant that is highly compatible with nylon and does not easily migrate or precipitate. Poor compatibility can lead to phase separation, fogging, sticky surfaces, and can affect transparency and performance. Thermal stability:Many liquid flame retardants lack thermal stability and may decompose or volatilize at nylon processing temperatures (typically >250°C), reducing flame retardant efficiency and potentially causing bubbles or odors. Flame retardant efficiency:Liquid flame retardants typically have lower flame-retardant efficiency compared to highly effective solid flame retardants (such as brominated compounds and phosphinate), which may require higher addition levels. However, higher addition levels increase the difficulty of compatibility and migration, and may deteriorate mechanical properties. Refractive index matching:It is very difficult to find a flame retardant liquid with a refractive index that closely matches transparent nylon. ② Reactive flame retardants:Covalently bond flame-retardant elements (such as phosphorus and nitrogen) to the nylon molecular chain. Theoretically, this can avoid dispersion issues. Complex synthesis and high cost: The synthesis of specialized flame-retardant monomers or polymers involves complicated processes and costs much more than additive flame retardants. Balance between flame retardant efficiency and transparencyThe introduction of flame-retardant structural units may affect the regularity of molecular chains, which is beneficial for transparency, but a sufficient content of flame-retardant groups is required to be effective. This may affect the crystallization behavior or refractive index uniformity of the final material. The properties of the base resin are greatly affected.Changing the molecular chain structure may significantly affect the melting point, fluidity, mechanical properties, and other characteristics of the material. ③Nano flame retardants:The use of nanoscale flame retardants (such as nanoclay and nano metal hydroxides), whose dimensions are much smaller than the wavelength of visible light, can theoretically reduce light scattering. Decentralization Challenge:Achieving complete, uniform, and stable exfoliation and dispersion of nanoparticles in a polymer matrix is extremely difficult. Aggregated nanoparticles can become strong scattering points. Flame retardant efficiency:Using nano flame retardants alone usually fails to achieve high flame retardant ratings (such as UL94 V0) and often requires blending with other flame retardants, which may introduce scattering sources. Cost and Process:High-quality nanomaterials and specialized dispersion processes are costly. The color issue of the flame retardant itself Some flame retardants themselves have inherent colors (for example, some brominated flame retardants tend to be yellowish, and some phosphorus-based flame retardants tend to be yellowish or reddish). Even if dispersion issues are resolved, their intrinsic colors will still affect the transparency and appearance of the material, making it difficult to achieve high light transmittance and a water-white appearance. In summary, the difficulty lies in Physical conflict:Solid flame retardants inevitably cause light scattering that destroys transparency. 2. Limitations of Alternative Solutions:Liquid flame retardants face challenges such as compatibility, migration, thermal stability, and flame retardant efficiency; reactive flame retardants are expensive and complex to synthesize; nano flame retardants are difficult to disperse and have limited efficiency. ③ Synergy is difficult to achieve:It is very difficult to achieve a balance between ensuring the flame retardant is highly uniformly dispersed in the matrix (at the nanoscale and stable) to maintain transparency, ensuring its flame retardant efficiency is high enough (usually requiring a high addition level), and not affecting other key properties of the material (mechanical, thermal, electrical). 1Current Possible Solutions(still developing/has limitations) 1. Develop high-performance transparent flame-retardant nylon special materials. Select specific transparent nylon resins (such as amorphous PA or microcrystalline PA) as the base. Carefully selected and compounded phosphorus-nitrogen-based flame retardants with good compatibility, similar refractive index, thermal stability, and high efficiency. It may be necessary to add an anti-migration additive. Result:It may achieve a certain level of transparency and flame retardancy (such as UL94 V2 or some thin-walled V0), but the cost is high, and long-term stability (such as heat aging resistance, light aging resistance, and migration resistance) may present issues. Additionally, the light transmittance and water whiteness are usually not as good as non-flame-retardant transparent nylon. 2. Multi-layer composite structure: The outer layer is made of transparent non-flame-retardant nylon, while the inner layer is made of flame-retardant nylon (which does not need to be transparent). This method sacrifices overall complete transparency but ensures a transparent appearance and internal flame retardancy. The process is complex and costly. Surface flame retardant treatment: Apply a flame-retardant coating to the surface of transparent nylon products. The coating needs to be highly transparent, have good adhesion, and strong durability. There are challenges regarding both transparency and durability. Therefore, the difficulty in modifying nylon to be "transparent and flame-retardant" essentially stems from the inherent contradiction between optical performance and flame-retardant performance in the path of realization. It requires overcoming multiple barriers such as physical dispersion, chemical compatibility, efficiency, and cost. Although there are some commercial transparent flame-retardant nylon products, they often involve compromises in terms of transparency, flame-retardant grade, overall performance, or cost.

On August 1st, it was reported that recently, the expansion and renovation project of Xianyou Intelligent Manufacturing New Materials, located in the Xianyou Economic Development Zone, is being vigorously advanced. The project is being constructed at a rapid pace, adding strong momentum to the industrial upgrading of the area. As a key municipal project, the Xianyou Intelligent Manufacturing New Materials Expansion Project is a crucial supporting project in the upgrading process of the Xianyou footwear and apparel industry. This project is invested by Xianyou Xiesheng Intelligent Manufacturing Technology Co., Ltd., with an investment of 1 billion yuan. It covers an area of 56.79 mu and plans to build five standardized factory buildings, one inspection and testing center, and one employee dormitory building, with a total construction area of 58,000 square meters. The construction is divided into two phases. It is understood that at present, three main buildings of the project have already taken shape, with the structure of one building having been topped out. On-site project manager Yan Yanhua introduced: "The dormitory building has now entered the stage of internal wall construction and plastering, with the renovation work expected to be completed by the end of this year; additionally, two factory buildings have completed the concrete work for second-floor beams and slabs in certain areas, with plans to achieve topping out in September and complete renovation by the end of the year." It is understood that the overall progress of the project is currently about 60%, and the first phase of the project is expected to be fully completed by early next year. According to the Color Masterbatch Industry Network, once the project is completed, it will introduce internationally advanced production equipment such as 3D digital image printers and computerized pattern machines, establishing a core production capacity of 4,800 tons of modified plastics and 1.44 million pairs of rubber soles annually. Meanwhile, the project will also build a close upstream and downstream industry chain collaboration with local footwear and apparel enterprises in Xianyou, providing solid support for the clustered development and high-quality upgrading of Xianyou's footwear and apparel industry. It is worth noting that the newly developed outsole material of the project, characterized by its recyclable and biodegradable green and environmentally friendly features, has been recognized by both the European and American markets as well as well-known domestic brands, and has received related orders.

Jiangxi Qiuhau New Material Technology Co., Ltd. plans to invest 72 million RMB to lease newly constructed factory buildings from Jiangxi Jude New Material Co., Ltd. in the Xiangtun Ecological Industrial Park, a part of Dexing High-tech Industrial Park, Jiangxi Province, for the construction of its Modified Engineering Plastics Production Project. The designed production capacity is 10,000 tons of modified engineering plastics and 60 million meters of thermal insulation strips per year, with the establishment of 10 modified plastic pellet production lines and 20 thermal insulation strip production lines.

Anhui Polynt New Materials Co., Ltd. "Anhui Polynt New Materials Co., Ltd. Polynt's Annual Production of 50,000 Tons of High-end Automotive Modified Materials Project" Environmental Impact Report Form Pre-approval Public Notice. The project involves the establishment of 16 new modified plastic production lines along with supporting water supply facilities, power supply facilities, testing facilities, and environmental protection facilities, designed for an annual output of 50,000 tons of high-end automotive modified materials. The main raw and auxiliary material, black masterbatch, has an annual designed usage of 2.5 tons. According to the Color Masterbatch Industry Network, this black masterbatch comes from Jiangsu Haiyan New Materials Co., Ltd. Jiangsu Haiyan New Materials Co., Ltd. was established in 2018. The company focuses on the research, development, and production of high-end plastic color masterbatches, functional masterbatches, and modified engineering plastics. Its products are widely used in fields such as automobile manufacturing, aerospace, electronics and electrical appliances, and food packaging. In 2021, Jiangsu Haiyan's wholly-owned subsidiary, Xuzhou Haiyan Technology Materials Co., Ltd., invested in the construction of a "Masterbatch Processing Project for New Energy Vehicle Components" in the Qing'an Town Industrial Park, Suining County. The total investment of the project is 150 million yuan, equipped with 16 color masterbatch production lines and 2 modified plastic production lines, with an annual production capacity of 20,000 tons of color masterbatch and 10,000 tons of functional masterbatch. The project was fully put into operation in September 2023.

During the brutal reshuffling period of overcapacity and persistently low prices in China's polycarbonate (PC) industry, a group of manufacturers is teetering on the edge. The alarms sounded by their financial statements are becoming increasingly piercing. Who will be the first to fall, becoming the first drop of blood in this bloody consolidation? The answer is not unclear—certain types of manufacturers, due to their structural deficiencies, have already been pushed to the forefront of potential collapse. Manufacturers that are highly dependent on technology and lack control over core processes are the first to bear the brunt. Such manufacturers are burdened with high technology licensing fees or depreciation and amortization expenses, leading to heavy fixed costs. Immature processes also result in unstable plant operations, frequent shutdowns that cause losses, and damage to customer trust. Their product quality often fails to meet the requirements of high-end markets (such as optical-grade or medical-grade), or their costs are significantly higher than those of similar products. Insufficient R&D investment makes it difficult for them to transition to high value-added sectors or optimize processes to reduce costs, putting them at high risk of being eliminated during industry upgrades. Cross-industry players with tight cash flow and high leverage face significant risks. These companies, which do not have a background in the chemical industry, entered the market during its peak by taking on debt. Once the projects were completed, they coincided with a downturn in the industry, resulting in revenues far below expectations, while high interest expenses continued to deplete cash flow. The payback period for investments has been severely extended, making it easy to encounter liquidity shortages when short-term debts mature, leading to credit defaults or asset freezes, and even causing projects to be abandoned, with prior investments becoming sunk costs. In addition, manufacturers with unreasonable regional layouts, standalone plants lacking cost synergy, as well as outdated facilities with high energy consumption, are also under pressure. The former are isolated outside core chemical industrial parks, resulting in high logistics costs, weak ability to obtain preferential raw materials and energy, and poor resilience to external shocks. The latter suffer from outdated technology, low efficiency, and high energy consumption. Under the strict “dual carbon” policy, they are either facing elimination or must bear huge renovation costs, making them completely uncompetitive in a low-margin environment. Overall, the companies most likely to collapse first are those simultaneously burdened with multiple disadvantages: deeply entrenched in the low-end general materials red ocean, small in scale, poor cost control (due to outdated technology and/or lack of synergy), high financial leverage, and persistently negative cash flow. Sudden shocks such as drastic raw material price fluctuations or further demand contraction will act as catalysts for their capital chain rupture. In the coming years, China's PC industry is bound to undergo a profound reshuffle. A large number of backward and small-scale producers lacking core competitiveness will be phased out. Leading companies with integrated industrial chains (such as in-house BPA production), advanced technology, large-scale production, high-end product structures (specialty PC), and strong financial strength will also face cyclical pressures. However, with their strong risk resistance and competitiveness, they will ultimately become the beneficiaries of market consolidation.

Proper drying of polymer resins is crucial during molding or extrusion processing of these materials to avoid operational errors and defects in the finished products. Resin dryers provide convenient, quick, and efficient drying treatment for injection molding and extrusion processing.Its types are diverse and can provide high-quality drying effects for almost all application scenarios. Some of the most common types include: Hot air dryer:No desiccant Compressed air dryer: Non-membrane or low dew point membrane Desiccant Bed/Dehumidification Type:Single or multiple bed types Desiccant Wheel/Dehumidification Type:Spin the wheel Vacuum dryer:Using heat and vacuum to remove moisture from materials. Dryers are suitable for handling molding machines and extruders with capacities ranging from as low as 1 pound per hour to over 6,000 pounds per hour. Optional solutions range from small, energy-efficient portable devices to large centralized systems. Many drying solutions feature compact designs and integrated conveying systems to ensure that dried materials are directly delivered to processing machines. Dryer type 01 Hot air dryer: Most economicalThe resin dryer usesUsing a one-way process, draw the atmosphere into the filter and heater, push the heated air through the drying hopper, and discharge it back into the atmosphere.。 Ambient air is heated and introduced into a drying hopper. Surface moisture is removed from non-hygroscopic materials, which are typically dried at temperatures of 180º F (82.22º C) or lower. For hygroscopic materials, the air heats the pellets, bringing internal moisture to the surface for drying. The maximum hot air temperature is determined by the material's softening (not melting) temperature. Such dryers are generally not used for hygroscopic materials, except when small quantities are taken from sealed resin bags. 02Compressed Air/Dehumidification/Membrane Dryer: Mainly used forLow throughputApplications andSmall machineThe application requires a large amount of compressed air. High-pressure compressed air expands to produce a larger volume of low-pressure air. The expanded air passes through a heater and then enters the drying hopper. The heated moist air is discharged from the drying hopper into the atmosphere. The non-membrane version provides factory (for process use) air with a dew point of 40ºF to 50ºF (approximately 4.44ºC to 10ºC). Factory compressed air typically provides air with a dew point of approximately 0 to +15ºF (approximately -17.8ºC to -9.44ºC). If the central compressed air system is equipped with a central compressed air dryer, this may reduce the compressed air dew point low enough (0 to -15ºF (approximately -17.8ºC to -26ºC)) to achieve proper drying without the need for an additional membrane on the dryer. Membrane versions allow compressed air to pass through a membrane to remove moisture from the air. Compressed air dryers using membranes can produce air at -40°F (-40º C) or better. Some applications may require the installation of a HEPA filter at the air outlet of the drying hopper to capture any discharged dust particles and prevent them from entering the atmosphere. 03Desiccant bed/dehumidifying dryer: This type of dryer usesDesiccant materialsWhen beads (for example) absorb moisture, they undergo a regeneration process to remove the moisture once they are saturated, allowing the desiccant to be regenerated and moisture to be absorbed into the beads again (adsorption process). Extremely hot air (400 to 800°F, approximately 204 to 427ºC) passes through the desiccant, releasing the moisture absorbed from the airflow. However, the beads must be cooled before returning to the drying process to avoid melting the resin due to a sudden temperature rise when handling on the bed. The multi-bed desiccant technology can use one or two blowers. The blowers provide process air, cooling air, and regeneration air, guiding the air through the desiccant beds using switching valves. 04Desiccant rotor (honeycomb type) dryer: The desiccant wheel dryer provides a different type of desiccant drying method. They...More efficient and more compact.And compared to other models, it requires less. Traditional desiccant dryers use a large amount of molecular sieves (in granular form) consisting of at least 30% clay. These desiccant beads degrade over time. The design of the desiccant wheel is completely different. It is composed of pure molecular sieves impregnated on a durable carrier medium. This material is formed into a reinforced honeycomb structure. Desiccant wheel dryers can provide stable and extremely reliable dew points under almost any environmental conditions. A stable process temperature means no bed temperature peaks; these dryers take only a few minutes to start drying from a cold start; due to the low rotor pressure drop, they can achieve above-average process airflow with minimal energy; the large surface area to volume ratio of the desiccant provides faster adsorption and desorption (regeneration) regulation; the honeycomb structure has a thin layer of desiccant that absorbs moisture evenly; during regeneration, the absorbed moisture easily evaporates off the media, allowing the dryer to achieve efficient continuous drying as the wheel rotates slowly. The working principle of a wheel dryer The rotary dryer operates simultaneously through three processes:Drying, regeneration, and cooling. In the drying circuit, moist air from the drying hopper passes through a filter, cooler, and blower to reach the desiccant wheel, where moisture is extracted from the process air, and then it returns to the drying hopper. The regeneration process uses separate filters, blowers, and heating chambers to remove moisture from the desiccant wheel, expelling the hot, moist air outside the dryer. The regeneration process uses separate filters, blowers, and heating chambers to remove moisture from the desiccant wheel, discharging hot, humid air outside the dryer. After regeneration comes cooling, with a portion of the low dew point cooling air being directed towards the desiccant wheel (before the heater) to enhance its moisture absorption capacity in preparation for the next drying cycle. 05Vacuum dryer: Vacuum dryerLowered the boiling point of water.In a vacuum degree of 90%, water boils at 122ºF (approximately 50ºC). The current design employs an insulated vacuum container; an insulated stainless steel hopper with drying temperatures up to 662ºF (approximately 350ºC); weighing sensors to control material levels and display material consumption; a dry air membrane for purging the vacuum container; and an insulated retention hopper for drying materials. The pellets are heated to the required temperature. When vacuum is applied, the water vapor inside the resin boils. Compared to traditional drying methods, the resin is ready for processing in a shorter time. The vacuum dryer has fewer moving parts, making it suitable for certain processing applications. Control system The control system monitors and maintains optimal performance during the drying process. Today's control platforms offer many control and diagnostic functions, including airflow and temperature control. Some platforms are capable of adjusting dew point parameters and incorporating dryer maintenance programs into routine operations and usage. Dryer control systems are typically equipped with color, user-friendly touch screens that intuitively display drying parameters and processes. The intuitive layout enables operators to quickly learn and initiate dryer functions. The dryer control device meets the data collection requirements of Industry 4.0 used in the plastics industry. The advanced control device optimizes moisture removal through features such as energy control algorithms and integrated conveying control with purge take-off functionality. The remote monitoring feature allows operators to closely monitor operations via mobile phones, tablets, or computers. The process data collected by modern dryer controllers enables smarter facilities and displays trend graphs of key parameters. Dry hopper All types of drying applications require drying hoppers. Drying hoppers allow the appropriate amount of material to reside for the right amount of time. This enables the dryer to remove the necessary moisture from the resin. The design of the resin drying hopper is another key consideration in the plastic drying system.Flow design, size determination, and thermal insulationThe key factors to understand when choosing an ideal drying hopper. Flow design (mass flow or funnel flow) will affect the material passing through the hopper. In overall flow design, all materials flow through the hopper at the same rate, and the material flow direction is opposite to the direction of the drying air (countercurrent). In a funnel flow system, materials flow faster in the center of the hopper and slower near the sides and walls of the hopper. Overall flow design is necessary to ensure that the material has adequate residence time before entering the feed throat of the processing equipment. The size of the drying hopper can be determined by weight or volume. The average capacity of small drying hoppers ranges from 0.1 cubic feet to 30.0 cubic feet. These are usually mounted on floor stands or portable carts, typically located next to or near the processing machine. For some low throughput applications, drying hoppers can be directly mounted on the feed throat of the machine. The average capacity of large drying hoppers is from 30 to 425 cubic feet, and they are usually installed on floor stands or mezzanine platforms due to the larger footprint requirements of the equipment. To determine the size of the drying hopper by weight, its capacity must equal the machine's processing rate (pounds/hour) multiplied by the material residence time (hours). For example, if your machine can process 100 pounds of material per hour and the material residence time is 4 hours, you will need a drying hopper with a capacity of 400 pounds. The formula for determining the size of a drying hopper by volume is: machine processing rate (lbs/hour) multiplied by material residence time (hours), then divided by bulk density (lbs/cubic foot). For example, 100 pounds of material requiring a 4-hour residence time with a density of 40 lbs/cubic foot would need a drying hopper with a capacity of 10 cubic feet. Many engineering resins can refer to a bulk density of 35 to 40 lbs/ft³ for virgin pellets (refer to material supplier data sheets). Filled resins—such as ABS with 40% glass filler—are heavier, while regrind is often less dense. The particle size and shape of regrind can also affect material density. For example: PET virgin pellets:52 to 53 pounds per cubic foot PET recycled sheet material:The density is usually 17 to 23 pounds per cubic foot, depending on the thickness of the board. PET bottle preform recycled material:Average 26 to 38 lbs/ft³ PET bottle flakes:Typically 18 to 23 lbs/ft³ PE virgin pellets:32 to 35 lbs/ft³ PE film:7 to 11 pounds per cubic foot (depending on specifications) Due to various reasons, non-insulated drying hoppers are not very popular: they waste energy, overheat the process area, affect operator safety, and the material adjacent to the hopper wall will be at a temperature below the selected set point. Resin moisture measurement equipment Understanding the initial moisture content of plastic resins is crucial for determining their drying time. The drying time and temperature guidelines provided by material suppliers are often based on assumed initial moisture content, which can lead to over-drying or under-drying of the resin, resulting in process and part issues. Resin moisture measurement devices come in two forms: offline (laboratory) or online. Laboratory equipment can also provide complete chemical analysis, while online equipment is usually cheaper and easier to use. Offline devices include: Weightlessness Analyzer:Measure the total change in weight of the resin sample when heated at a specific temperature. Moisture AnalyzerDetect the moisture content using a chemical process. Online moisture analyzer includes: Capacitive sensor:Measure the capacitance change caused by dielectric variation. Microwave:The working principle is that the dielectric constant of water is significantly higher than that of most other materials. Due to the dipole effect of water molecules, the resonance frequency of a microwave resonator changes with variations in water content. These changes are detected by the sensor electronics and scaled through a calibration process to provide an accurate reading of the presence of moisture. Near-infrared:Using a beam to excite water molecules and measuring the wavelength of light absorption to indicate the moisture content in resin.