Chengdu Benzene Ring New Material Technology Co., Ltd. (hereinafter referred to as "Benzene Ring New Material") has spent 14 years in technical research and development, and successfully achieved the mass production of PPS film in March 2025, with a daily production capacity of 300,000 square meters, becoming the first domestic and second global company with the ability to mass-produce PPS film. This breakthrough not only fills the domestic gap but also breaks the foreign technological blockade, marking a key step for China in the field of high-end new materials.

PPS film laboratory

Chengdu Benzene Ring New Material Technology Co., Ltd. is incubated by the national "specialized, refined, distinctive, and innovative" enterprise —— Chengdu Shuhong Equipment Manufacturing Co., Ltd. Shuhong Equipment has a deep technical accumulation in the manufacturing of large-scale equipment for non-ferrous metal rolling, and venturing into the research and development field of PPS film new materials is an important manifestation of its scientific research strength expanding outward, as well as a key step for the company to enhance its core competitiveness through new quality productivity. Since 2010, Shuhong Equipment has initiated the pre-research of PPS film technology, and in 2023, it officially established Benzene Ring New Material, focusing on the construction of pilot production lines and process optimization.

During the R&D process, the team overcame core technical challenges such as material preparation, purification, and modification, and invested a significant amount to go abroad for data verification. 70% of the pilot production line equipment was independently developed by Shuhong Equipment, greatly reducing external dependence. In 2024, the pilot production investment company injected 5 million yuan in "angel round" funding to accelerate the project's implementation.

Entering the production workshop of benzene ring new materials, the intelligent production line operates efficiently. The seemingly ordinary corn-like PPS granules, after undergoing 7 precise processes including pelletizing, drying, extrusion, stretching, edge trimming, winding, and packaging, magically transform into rolls of transparent film-like sheets. In appearance, it does not differ much from common plastic films, but this thin layer contains powerful technological strength and multiple national patent technologies.

The PPS film of the new benzene ring material has reached international advanced levels in multiple key indicators:

raw materials for producing PPS film

According to Huang Dechao, the general manager of Chengdu Benzene Ring New Material Technology Co., Ltd.: "Our current daily production capacity reaches over 4 tons. Calculating that each ton of PPS can be stretched into 73,500 square meters of 10-micron-thick film, 4 tons of material can form a daily production capacity of 300,000 square meters of PPS film." This production capacity scale has significant influence in both domestic and international markets, marking that China has already possessed the capability for large-scale production of PPS films.

In terms of applications, the PPS film produced by Chengdu Benzene Ring New Material Technology Co., Ltd. has already played a role in some key areas. In the production of composite copper foil materials, PPS composite copper foil is gradually replacing traditional metal copper foil in lithium battery manufacturing. This innovative application not only effectively conserves copper resources but also shows significant effects in improving the safety of lithium batteries and achieving weight reduction. At the same time, due to the characteristics of PPS film such as temperature resistance, flame retardancy, and low dielectric loss, the high-performance special PPS film it produces has also been applied in 5G transmission and communication fields. For example, this film performs excellently on flexible electronic circuit boards, maintaining superior dielectric properties in high-temperature environments, meeting the demands for high performance, miniaturization, and weight reduction of electronic devices in the 5G era.

With the vigorous development of the global new energy vehicle industry and the rapid popularization of 5G technology, the market demand for high-performance materials such as PPS film has shown explosive growth. According to market forecasts, by 2025, the global PPS film market size is expected to reach $8.8 billion, with a compound annual growth rate exceeding 10%. Chengdu Benzene Ring New Material Technology Co., Ltd. has achieved large-scale production of PPS film at just the right time, not only meeting the urgent domestic demand for high-end PPS film and reducing the dependence of related domestic industries on imported products, but also leveraging its technological and cost advantages to compete in the international market, securing a more important position for China's polymer new material industry in the global industrial chain. This achievement is not only a successful model of the company's own innovative development, but also injects strong momentum into the development of China's strategic emerging industries.