6130:Crastin® 6130is an unreinforced, medium high viscosity polybutylene terephthalate resin for extrusion and injection molding.(Crastin®6130是一个无筋,中高粘度聚对苯二甲酸乙二醇酯挤出和注塑成型树脂
6129:Crastin® 6129 is an unreinforced, high viscosity polybutylene terephthalate resin for extrusion and injection molding.(Crastin®6129是一个无筋,高粘度聚对苯二甲酸乙二醇酯挤出和注塑成型树脂。)