PC is a polycarbonate material and a thermoplastic resin, which is famous for its excellent physical properties and chemical stability. The molecular chain of polycarbonate contains carbonate groups, which can be divided into three types according to the structure of ester groups: aliphatic, aromatic and aliphatic-aromatic. PC materials are favored for their high transparency, high mechanical strength, heat resistance, weather resistance, high molding accuracy and good dimensional stability. It also has the advantages of self-extinguishing, flame retardant, non-toxic and colorable. However, the disadvantages of PC include insufficient hardness compared with metal, which may lead to easy scratching of appearance, poor fatigue resistance and wear resistance. PC materials are widely used in electrical and commercial equipment (such as computer components, connectors, etc. ), electrical appliances (such as food processors, refrigerator drawers, etc. ), as well as the transportation industry (such as vehicle front and rear lights, instrument panels, etc.). In addition, PC is also used to manufacture food packaging, catering utensils, safety helmets, pump blades, surgical instruments, medical instruments, advanced insulation materials, gears, lampshades, high-temperature lenses, peeping glasses, electrical connectors, optical disks, etc.