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进口pp|化学视窗
> 有关“进口pp”的文章
  • 进口pp - pp进口价格

    进口pp - pp进口价格

    前言:不同品牌的PP材料有什么不同的特性(如国产与进口的)简介 PP塑料,化学名称:聚丙烯 英文名称:Polypropylene(简称PP) 比重:0.9-0.91克/立方厘米 成...

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