Polycarbonate (English abbreviation PC), also known as PC plastic; It is a high polymer containing carbonate group in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic - aromatic and other types. The low mechanical properties of aliphatic and aliphatic aromatic polycarbonate limit their application in engineering plastics.

Only aromatic polycarbonate has been industrially produced. Because of its special structure, polycarbonate has become the fastest growing general engineering plastics among the five engineering plastics

PC engineering plastics three application areas are glass assembly industry, automobile industry and electronics, electrical industry, followed by industrial machinery parts, optical discs, packaging, computers and other office equipment, medical and health care, film, leisure and protective equipment. PC can be used as Windows and doors glass, PC laminate is widely used in banks, embassies, detention centers and public places of protective Windows, used for aircraft cabin cover, lighting equipment, industrial safety plate and bulletproof glass.