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%.  

Panel industry giants warn that the second half of 2025 looks bleak; Innolux bluntly stated that shipments across all product lines will decline in the third quarter. On July 31, panel giants AUO and Innolux both warned that the traditional peak season in the second half of the year will not be as strong as usual. AUO has revised down its capital expenditure target for this year from the originally planned NT$30 billion to no more than NT$28 billion, a decrease of about 7%. Innolux frankly stated that demand has turned conservative, and shipments for all product lines will decline this quarter. Panels are essential components for consumer products such as mobile phones, laptops, and PCs. With both major companies warning that the peak season in the second half of the year will not be strong, it suggests that consumer product demand for the year-end Thanksgiving and Christmas seasons in Europe and the United States will be conservative, effectively cancelling the peak season. AUO held an earnings call on July 31. Chairman Peng Shuanglang admitted that due to factors such as the appreciation of the New Taiwan Dollar and uncertainty over tariffs, client-side inventory buildup this quarter is conservative, and brand manufacturers are strictly controlling inventory in response. The peak season effect in the second half of the year is expected to be weaker than in previous years. AUO estimates that shipments of all types of panel products this quarter will decline compared to the previous quarter. AUO also estimates that the average exchange rate of the New Taiwan Dollar against the US Dollar for the second half of the year will be 29. Since more than 90% of its revenue is denominated in US Dollars, it is expected that the New Taiwan Dollar revenue from the display business this quarter will decrease compared to the second quarter. However, US Dollar revenue is expected to remain flat with the second quarter. Considering the conservative end-market demand, AUO announced a downward revision of its 2025 capital expenditure target, lowering it from the originally planned within NT$30 billion to no more than NT$28 billion. In July last year, AUO announced its transformation plan towards three major operational pillars, aiming for the two main businesses, Mobility Solution and Vertical Solution, to account for more than half of its revenue by 2027. Regarding the details of the two major business outlooks for this season, AU Optronics General Manager Ko Fu-Jen pointed out that Mobility Solution's revenue in US dollars will maintain growth, while revenue in New Taiwan dollars is expected to decline by 5%. The annual related revenue is projected to increase by a single-digit percentage, slightly below the original forecast, mainly due to exchange rate effects. In the Vertical Solution segment, as AUO holds a 32.8% stake in ADLINK and increased its board seats in the June board reelection to gain control, the revenue will be consolidated in the third quarter, showing a quarter-on-quarter growth of 25%. Peng Shuanglang added that the combined revenue contribution of the two major businesses in the second quarter reached 43%, increasing by 2 percentage points year-on-year, steadily progressing towards the goal of exceeding 50% next year. Regarding the tariff issue, Peng Shuanglang reiterated that panels are components, with a low proportion directly exported to the United States, and most shipments are conducted under FOB terms, so the direct impact of tariffs is limited. Observing that customers' products are mostly on the exemption list, after AUO's acquisition of BHTC, it has completed operational layouts in Southeast Asia, India, Europe, Mexico, and North America. In the future, it can flexibly adjust according to tariff changes and does not rule out collaborating with the supply chain to evaluate the most suitable production model. On the same day, AUO also announced that the company will establish the positions of Group CEO and COO, which will be concurrently held by Chairman Paul Peng and President Frank Ko, respectively. AUO announced that, in response to the company's organizational structure for display technology, smart mobility, and vertical sectors, the Board of Directors has approved the establishment of the Group Chief Executive Officer position. Chairman Mr. Paul Peng will concurrently serve as Group CEO, overseeing the group's global strategy and development direction, as well as leading the group’s operational support units. In addition, to accelerate the integration among the three major operational pillars, business development, and global expansion, as well as to enhance organizational efficiency and collaborative operations, the Board of Directors has approved the establishment of the position of Group Chief Operating Officer, which will be concurrently held by the company's General Manager, Dr. Ko Fu-Jen. This move aims to respond to external changes, strengthen competitiveness, and expedite strategic transformation. The new personnel arrangement will take effect from August 1, 2025. Innolux stated that due to tariff issues and some customers having already pulled orders forward, panel demand in the second half of the year will become more conservative. Panel manufacturers in the industry generally adopt a production strategy based on demand, which helps maintain supply-demand balance and price order. Due to the sluggish market conditions, Innolux expects shipments across all product lines to decline this quarter. Shipments in the non-display sector and commercial displays are both expected to decrease by approximately 3% quarter-on-quarter, while consumer displays are estimated to decline by about 5% quarter-on-quarter.

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%.  

On July 31, American auto parts supplier BorgWarner announced that in the first half of this year, its net sales decreased by 0.6% to $7.153 billion from $7.198 billion in the same period last year. Operating income was $526 million, lower than $592 million in the same period last year. Gross profit was $1.279 billion, down from $1.329 billion in the same period last year. The gross profit margin was 17.9%, lower than 18.5% in the same period last year. Adjusted diluted earnings per share were $2.32, higher than $2.22 in the same period last year. Image source: BorgWarner In the second quarter of this year, its net sales increased by 0.97% year-on-year from $3.603 billion to $3.638 billion, exceeding analysts’ previous expectations of $3.61 billion. Operating profit was $289 million, down from $297 million in the same period last year. Gross profit was $640 million, lower than $685 million in the same period last year. Gross margin reached 17.6%, down from 19.0% in the same period last year. Adjusted diluted earnings per share were $1.21, higher than $1.19 in the same period last year and also above the expected $1.08. BorgWarner raised its 2025 net sales forecast, mainly due to increased automotive production and favorable exchange rate factors, causing its stock price to rise more than 2% in pre-market trading. Currently, BorgWarner expects its full-year 2025 net sales to be between $14.0 billion and $14.4 billion, higher than the previous forecast of $13.6 billion to $14.2 billion; operating profit to be between $1.167 billion and $1.217 billion; operating profit margin to be between 8.3% and 8.5%; adjusted operating profit to be between $1.42 billion and $1.48 billion; adjusted operating profit margin to be between 10.1% and 10.3%, compared to the previous forecast of 9.6% to 10.2%; adjusted diluted earnings per share to be between $4.45 and $4.65, higher than the previous forecast of $4.00 to $4.45; operating cash flow to be between $1.368 billion and $1.418 billion; and free cash flow to be between $700 million and $800 million, an increase of $50 million from the previous forecast. Although tariffs targeting automakers force auto parts suppliers to bear more costs, BorgWarner will benefit as automakers increase production and market demand for efficient hybrid systems and turbochargers remains strong.

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.  

Headline Summary: Raw Material News-.Evonik Release2025Second Quarter Financial Report: Performance Impacted by Declining Demand Automotive News-ZF announces major layoffs and salary cuts!1.2Tens of thousands of employees protest in the streets Packaging News-BioLogiQ 500USD 10,000 support, focusing on innovation and R&D in fresh food packaging Medical News-French medical mold manufacturerJBTGroup AcquisitionD&M Plastics Electronic News- 2025Fiscal year No.3Quarterly Financial Report Release:iPhoneSales breakthrough30 Billion China region resumes growth Architectural News-Oriental Yuhong intends8.8A billion yuan acquisition of a leading company in Chile's building materials retail sector. Macroeconomic News-Japan insists that the United States comply with the bilateral agreement and urges an immediate reduction of tariffs on automobiles and auto parts. Price Information-Ethylene Asia:CFRNortheast Asia820 / CFRSoutheast Asia830 /   The following are the details of international news: 1.Evonik releases2025Second Quarter Financial Report: Declining Demand Impacts Performance In the increasingly challenging economic environment, Evonik Industries2025Adjusted EBITDA for the second quarter of the yearEBITDA 5.09100 million euros, a decline from the strong performance in the same period last year.12%In the second quarter, more than half of the decline in sales was due to unfavorable exchange rate fluctuations and the divestment of the superabsorbent polymer business, which was still part of Evonik in the same period last year. Sales volume declined year-on-year.4%The overall product prices remained stable. Sales performance of C4 chain products was below average. Polyamide12The production facility maintenance downtime for such products exceeded expectations, which also had a certain impact on sales. Evonik expects that if the global economy does not deteriorate further,2025Annual full-year adjustmentEBITDAWill reach the forecast interval (20 23The lower limit of 100 million euros. 2.The United States imposes the largest-scale sanctions on Iran! Involving a Chinese port company. Recently, the United States Department of the Treasury's Office of Foreign Assets Control announced sanctions against Iranian businessman Mohammad.Sanctions imposed on the shipping network controlled by Hossein Shamkhani.50Multiple entities and individuals as well as50Multiple oil tankers and container ships. This is since2018This is the largest scale of sanctions imposed by the U.S. government on Iran since the "maximum pressure" campaign. It is reported that in this sanction action, the U.S. Department of State has specifically targeted Zhoushan Jinrun Petroleum Transfer Co., Ltd. in Zhoushan, Zhejiang, China.Zhoushan Jinrun Petroleum Transfer Co., Ltd.…was separately included in the sanctions list, on the grounds of allegedly providing transshipment and transfer services of crude oil and refined oil products for Iranian oil tankers. 3.Teijin's bio-based polycarbonate(PC)Used for making organ pipes, exhibited at the Osaka Expo in Kansai, Japan. Teijin Limited announced its use of biomass-derived...Polycarbonate（PCResin-molded pipes have been used to manufacture the world's first bioplastic pipe organ. These transparent pipes are produced by a plastic molding company under Teijin Limited.Teiyo Co., Ltd.Manufacturing. This innovative organ will be2025 8 19 25During the Expo 2025 Osaka, Kansai, Japan, at the Osaka Pavilion for Medicine and Healthcare"Rebirth Challenge"The exhibition area is on display. 4.Oriental Yuhong plans to8.8Billion-yuan acquisition of a leading company in Chile's building materials retail sector 7 31In the evening, Oriental Yuhong announced that its wholly-owned subsidiaries, Oriental Yuhong Overseas Development Company and Oriental Yuhong International Trading Company, plan to jointly invest approximately [amount] of their own funds.1.23hundred million USD (approximately8.8(100 million RMB) to acquire the counterparty’s holdings in ChileConstrumart S.A.100%Equity. After the completion of the transaction, Oriental Yuhong Overseas Development Company will holdConstrumart 99%Equity will be held by Oriental Yuhong International Trade Company.Construmart1%Equity. This transaction does not constitute a related-party transaction, nor does it constitute a major asset restructuring. According to the announcement,ConstrumartWithin the territory of Chile, there are approximately31Home Building Materials Supermarket mainly sells construction auxiliary materials, structural building materials, timber, flooring, bathroom and kitchen products. It has now developed into a leading enterprise in the building materials retail sector in Chile. 5.French medical mold manufacturerJBT Group AcquisitionD&M Plastics French medical mold manufacturerJBTGroup (Groupe JBThas acquired an injection molding company located in Burlington, IllinoisD&M PlasticsThe company mainly serves the healthcare sector.JBTThe acquisition announced by the group earlier this month will enable it to provide reliable localized services to its North American customer base, especially in...ISO 7The production requirements of the cleanroom class.D&M PlasticsHerebyJBTAmerican companyJBT USA Operated in name only. 6.BioLogiQ 500 $10,000 support, focusing on innovation and research and development in fresh food packaging. Specialized Vision8 1News of the day,BioLogiQ Through the United States Department of Agriculture Foreign Agricultural Service (USDA Foreign Agricultural Service Clemson UniversitySet up500 The Sustainable Packaging Innovation Lab, established through the Specialty Crop Export Assistance Program, has received grant funding.BioLogiQ The collaboration with Clemson University will develop and commercialize advanced packaging solutions to help American farmers meet the evolving global packaging and trade standards. The project will focus on flexible films, tray wrap films, and protective packaging for fruits, vegetables, nuts, and specialty leafy greens. 7. 2025Fiscal year number3Quarterly Financial Report ReleaseiPhoneSales breakthrough30Hundreds of millions: Growth resumes in the China region 8 1According to today's news, Apple announced as of today.6 28 2025The financial report for the third quarter of the fiscal year showed that revenue for the quarter reached a record high since...2021 12The largest increase since the beginning of the month. The financial report shows that Apple's total revenue for the third fiscal quarter...940.4Billion USD, year-on-year growth10%, net profit reached244.3100 million USD, year-on-year growth9%It is worth mentioning that Apple's revenue in China for this quarter was153.69Billion US dollars, compared to the same period last year147.28Billion-dollar growth4%Ended the decline of the first two quarters and resumed growth. 8. ZF massive layoffs and salary cuts!1.2Ten thousand employees protest on the streets ZF Group, a renowned automotive parts supplier from Germany. Japan announced plans to...2028By the end of the year, approximately [number] layoffs will occur nationwide in Germany.11000 14000People. This is the largest layoff plan in the company's history.，Most of the layoffs will come from the production department, including employees from the R&D department. In response to the austerity policy and layoff plan, more than across Germany1.2Ten thousand employees took to the streets to protest the board's plan to further cut thousands of jobs and continue suppressing wages, said the chairman of the ZF General Workers' Union.Achim DietrichIt is revealed that if the employer demands full implementation, employees will have to forgo their entire annual salary.25% 30%Measures include shortening working hours, canceling one-time bonuses, and cutting benefits beyond standard levels, with significant variations across regions and positions.   Overseas Macroeconomic Market: The Japanese government and the automobile industry exchanged views on US tariffs. NHKAccording to the report, on the same day, Japanese Prime Minister Shigeru Ishiba met with leaders of multiple Japanese automobile industry groups to exchange views on the Japan-US tariff agreement. The Japanese automobile industry groups requested the Japanese government to provide support for the supply chain and to formulate policies to stimulate domestic demand. Masanori Katayama, Chairman of the Japan Automobile Manufacturers Association and President of Isuzu Motors Ltd., expressed the hope that the Japanese government would continue dialogue with the United States to further reduce tariffs. Japan insists on the United States fulfilling bilateral agreements and urges the immediate reduction of tariffs on automobiles and auto parts. 8 1At a press conference, Japan's Chief Cabinet Secretary Yoshihide Hayashi stated that Japan will continue to demand that the United States fulfill the bilateral agreements reached, including reducing tariffs on automobiles and auto parts. Hayashi emphasized:“U.S. President Trump has signed an executive order based on the U.S.-Japan agreement to lower bilateral tariffs.15%……The Japanese government still insists that the US side take immediate action to implement the terms of the agreement, especially regarding the reduction and elimination of tariffs on automobiles and auto parts.” The European Union has launched an anti-dumping investigation into Chinese polyamide yarn. 7 29The European Commission announced the initiation of an anti-dumping investigation on polyamide yarn originating from China. The period of the dumping investigation is2024 7 1 2025 6 30The damage investigation period is as follows:2022 1 1The investigation period for dumping has ended. The preliminary ruling in this case is expected on7Within months, not exceeding the maximum.8months. Japan plans to raise the minimum wage to a record high again. A panel of Japan's Ministry of Labor plans to recommend raising the national average minimum wage by about __ for the current fiscal year.6%This will be the first since2002The largest increase since the beginning of the year. The agency added that the proposed hourly raise is approximately1118Japanese Yen7.43...USD), will exceed last year.5%The increase is the largest since the implementation of the current system, but no source was cited. The Japanese Prime Minister, Shigeru Ishiba's government, set a target last year to...2020Increase the average minimum wage annually42%Reach per hour1,500Yen.   Price Information: Renminbi to US Dollar Central Parity Rate The central parity rate of RMB to USD is reported as7.1496, downgrade2Point; previous trading day's central parity rate7.1494The official closing price of the previous trading day7.1930The overnight session closed higher.7.1998。 [Upstream Raw Material USD Market Price] Ethylene Asia:CFRNortheast Asia820 / CFRSoutheast Asia830 / Propylene Northeast Asia:FOBSouth Korea average price730 / CFRAverage price in China770 / North Asia CFR price, propane502-509 /Ton; butane472-479 / South China Frozen Goods8CFR (Cost and Freight) under the moonlight, propane540-550 /Ton; butane510-520 / CIF price of frozen goods in Taiwan region, propane502-509 /Ton; Butane472-479 / 【LLDPEMarket Price in USD Thin film:860-920 / CFRHuangpu); Injection Molding:940 / CFRDongguan); 【HDPEMarket price in USD Thin film:910 / CFRHuangpu). Hollow:855 / CFRHuangpu); Pipe material:1030 / CFRHuangpu) 【LDPEMarket price in USD Film1070-1095 / CFRHuangpu); Coating:1280 / CFRHuangpu). 【PPMarket price in US dollars Homopolymer:910-965 / CFRHuangpu), rise10 / Copolymerization:920-975 / CFRNansha); Transparency:995-1055 / CFRHuangpu), declined5 / Pipe material:1160 / CFRShanghai).

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 1, it was reported that the plastics industry holds an important position in the application fields of titanium dioxide, being its second-largest user. The consumption of titanium dioxide in the plastics sector accounts for approximately 20% of its total consumption. Among more than 500 titanium dioxide grades worldwide, over 50 are specifically designed for plastics. When titanium dioxide is applied to plastic products, it not only functions as a pigment with high hiding power and strong decolorizing ability, but also enhances the heat resistance, light resistance, and weather resistance of the plastics, protecting them from ultraviolet damage. At the same time, it improves the mechanical and electrical properties of the products. Almost all thermosetting and thermoplastic plastics rely on titanium dioxide, with usage typically ranging from 1% to 5%. The application methods are diverse: it can be mixed with resin dry powder, blended with liquids containing plasticizers, or first processed into masterbatches before use. According to the Masterbatch Industry Network, the particle size of titanium dioxide used in plastics is generally finer, typically ranging from 0.15 to 0.3μm. This allows it to form a blue undertone, which provides a masking effect for most resins with a yellow hue or those prone to yellowing. Additionally, titanium dioxide used in plastics is usually subject to organic surface treatment, using agents such as polyols, silane, or siloxane. The treated titanium dioxide can achieve better dispersion under appropriate mechanical shear forces. However, it is important to note that the high hardness of rutile is a disadvantage for glass fiber reinforced plastics, as it can damage the glass fibers during the coloring process, leading to a significant reduction in the mechanical strength of the plastic products. Therefore, when coloring glass fiber reinforced plastics, it is advisable to choose zinc barium white or zinc sulfide as white pigments, which have slightly inferior optical properties but much lower hardness. Plastic products have clear quality requirements for titanium dioxide. In terms of weather resistance, plastic products used outdoors and plastic doors and windows must ensure that the titanium dioxide has good weather resistance; whiteness determines the appearance of light-colored or white plastic products; dispersibility affects the production cost of plastic products, and poorly dispersed titanium dioxide reduces the smoothness and glossiness of the products; titanium dioxide with good hiding power allows the produced plastic products to be lighter and thinner. Plastic color masterbatch is a highly concentrated and efficient color formulation. According to incomplete statistics, the amount of titanium dioxide used annually for masterbatch production in China is about 20,000 to 30,000 tons. The performance of color masterbatch is usually reflected in subsequent product applications, such as film blowing or injection molding processes, so the performance of titanium dioxide in the masterbatch mainly manifests during its application. Specifically, tinting strength determines the amount of titanium dioxide required for plastic products of the same color; whiteness and color difference affect the appearance of light-colored (white) plastic products with the same titanium dioxide content; dispersibility influences the production cost of masterbatch as well as the appearance, gloss, and other indicators of plastic products; and processing performance is related to the production cost of the masterbatch.

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.