护套：挤包在内护层上的护套应采用PVC.ST4型聚氯乙烯混合物。
Sheath: PVC. ST4 model PVC mixture should be adopted as the inner sheath.
本发明的聚氯乙烯混合物广泛地应用在PVC异型材、PV C管材、PV C板材和片材等方面。
The polyvinyl chloride mixture can be widely applied to PVC profiled bars, PVC pipes, PVC plates and sheets and the like.
本发明的聚氯乙烯混合物广泛地应用在PVC异型材、PV C管材、PV C板材和片材等方面。
The polyvinyl chloride mixture can be widely applied to PVC profiled bars, PVC pipes, PVC plates and sheets and the like.
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