Polybutylene terephthalate (PBT) is a thermoplastic polyester. Compared with other thermoplastic engineering plastics, non-reinforced PBT has better processing and electrical properties. PBT has a low glass transition temperature, and can crystallize quickly at a mold temperature of 50 ° C, with a short processing cycle. Polybutylene terephthalate (PBT) is widely used in the electronics, electrical, and automotive industries. Due to the high insulation and temperature resistance of PBT, it can be used as a flyback transformer for televisions, car distribution boards and ignition coils, office equipment housings and bases, various automotive exterior parts, air conditioner fans, electronic stove bases, office Equipment shells.