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On May 10, 2026, PetroChina Company Limited's Guangxi Petrochemical Branch marked a significant milestone by achieving mass production of its independently developed optical-grade polystyrene product, GPPS-550N. This development introduces a new, reliable Chinese supplier to the global optical materials supply chain, characterized by stable mass production capabilities, proprietary processes, and production flexibility. GPPS-550N stands out for its exceptional light transmittance and thermal stability, making it an ideal choice for applications in LED displays, light guide plates, premium packaging, and home appliances. Its technical specifications are on par with international advanced standards, further solidifying China's position in the high-end polystyrene market.
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