6130:Crastin? 6130is an unreinforced, medium high viscosity polybutylene terephthalate resin for extrusion and injection molding.(Crastin?6130是一個無筋,中高粘度聚對苯二甲酸乙二醇酯擠出和注塑成型樹脂
6129:Crastin? 6129 is an unreinforced, high viscosity polybutylene terephthalate resin for extrusion and injection molding.(Crastin?6129是一個無筋,高粘度聚對苯二甲酸乙二醇酯擠出和注塑成型樹脂。)