PBT belongs to polyester series and is made from PTA and BDO which form into polybutylene terephthalate(referred as PBT)after
the continuous process of esterification and polycondensation. It is a kind of crystalline and thermoplastic polyester with the
features of high heat resistance, toughness, fatigue resistance, high insulation resistance, dimensional stability, preferable
elasticity and dyeing property.