Crastin LW9030 NC010 DuPont Engineering Polymers PBT Alloy is a 30% glass fiber reinforced, flame retardant polybutylene terephthalate alloy for injection molding.
 

聚对苯二甲酸丁二醇酯，又名聚对苯二甲酸四次甲基酯。与PET一起统称为热塑性聚酯。用于电子电气，汽车和机械设备等。