The VALOX family of thermoplastic polyester resins are semi-crystalline materials based on polybutylene terephthalate (PBT) and/or polyethylene terephthalate (PET) polymers. VALOX resin formulations include many performance-matched grades designed to provide application-specific property profiles. VALOX resins combine heat and chemical resistance, as well as outstanding electrical properties with exceptionally good processability and surface appearance