PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；PBT SK602美国杜邦PBT SK602加15%玻纤 PBT SK602经润滑HB耐化学性PBT SK602；