Low density polyethylene makes a nice substitute for PVC. It has a simple makeup and doesn't require additives to make it soft and pliable.
低密度的聚乙烯是PVC很好的替代品，它的生产过程相对简单，也不需要添加化学物质增加柔软性。
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Special keel is divided into PVC and Aluminum Alloy two materials, the main ingredient is PVC soft structure, soft buckle edge is made from PVC with some special additives.
In this article, USES of new additives in PVC-U pipe and USES of new special pipe material in polyolefin pipe and some new pipe materials were discussed.
本文从不同的管道材质的角度主要阐述了新型助剂在PV C - U管道中的应用、新型管道专用料在聚烯烃管道中的应用及一些新型塑料管道的材料。