PBT 

PBT (Polybutylene Terephthalate) is a type of thermoplastic engineering plastic that belongs to the polyester family. It offers excellent mechanical strength, rigidity, and heat resistance, as well as good chemical resistance and electrical insulation properties. PBT is commonly used in applications like electronics, automotive parts, household appliances, and connectors, especially where high temperature and chemical resistance are required. It also has good processability, making it suitable for molding through injection and extrusion methods.