The three major applications of PC engineering plastics are glass assembly industry, automotive industry and electronics, electrical industry, followed by industrial machinery parts, CD-ROMs, packaging, computers and other office equipment, medical and health care, film, leisure and protective equipment, etc. PC can be used as window and door glass, PC laminate is widely used in banks, embassies, detention centers and public **** places of protective windows, for aircraft hatch covers PC boards can be used for various signs, such as gasoline pump dials, automobile dashboards, warehouse and open-air commercial signs, point slide indicators, PC resin is used in automobile lighting systems, dashboard systems and interior decoration systems, as headlight covers, automobile front and rear gears with reinforcement, reflective mirror frames, door frame covers, operating rod guards, flow stops, PC is used as junction boxes, sockets, plugs and bushings. PC is used as junction boxes, sockets, plugs and sleeves, gaskets, TV converters, connectors for communication cables under telephone line supports, electric switch boxes, telephone switchboards, switchboard components, relay housings, PC can be used as low load parts for household appliance motors, vacuum cleaners, shampoos, coffee makers, toasters, handles for power tools, all kinds of gears, worm gears, bushings, guides, shelves for refrigerators, PC is an ideal material for optical discs as storage media. PC bottles (containers) transparent, lightweight, good impact resistance, resistance to certain high temperatures and corrosive solution washing, as recyclable bottles (containers). PC and PC alloys can be made into computer racks, shells and auxiliary machines, printer parts. Modified PC is resistant to high-energy radiation sterilization, boiling and baking disinfection, can be used for blood specimen collection apparatus, blood oxygenator, surgical instruments, kidney dialyzer, etc. PC can be made into helmets and helmets, protective masks, sunglasses and sports eye protection. PC film is widely used in printing charts, pharmaceutical packaging, membrane commutator.