Polycarbonate (PC) is a thermoplastic engineering plastic with excellent comprehensive properties. It has excellent electrical properties, low water absorption, good light transmission, and visible light transmittance of more than 90%. It is the only one of the five general engineering plastics. Varieties with good transparency and high strength, ductility and toughness are widely used in electronic appliances, home appliances, building materials, automobile manufacturing and medical equipment. At present, the material has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics.

Since 2005, China's polycarbonate consumption has rapidly increased from 600,000 tons to 1.8 million tons, with an average annual consumption growth rate of 10%. It is expected that China's PC demand will continue to grow rapidly in the future . The thermal insulation performance of polycarbonate sheet is 25% higher than ordinary glass, the impact strength is 250 times that of glass, and the weight is only 1/2 of glass, so PC is an ideal lighting material for the building decoration industry. PC sheet is widely used in various shapes of large-area lighting roofs, stair guardrails and high-rise building lighting facilities.

The automobile is another important terminal application of PC . The consumption ratio in foreign developed countries is about 20%, but the consumption ratio in China is only about 5%. The trend of lightweight vehicles is becoming more and more obvious. Polycarbonate has excellent impact strength and is easy to mold. Compared with traditional materials such as high-speed steel and aluminum alloys, it significantly reduces weight. In addition, the photoelectric field of use of the PC film, a light diffusion LED lighting PC , the radiation resistant medical device PC and so is the potential future demand hot. According to estimates, China's polycarbonate market will continue to grow by 8% -10% in the future.

Global polycarbonate supply is currently highly concentrated. Due to the relatively high threshold of polycarbonate production technology, the production capacity is mainly concentrated in multinational chemical companies, and the supply is highly concentrated. According to statistics from authoritative organizations ICIS and Bayer, the production capacity of the top six companies in the world accounts for 94%. Due to the strict control of technology by international giants, domestic polycarbonate plant production is mostly invested by foreign companies or Sino-foreign joint ventures.