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          PBTPolybutylene Terephthalates
          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.
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