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pvc护套|化学视窗
> 有关“pvc护套”的文章
  • pvc护套 - pvc外护套

    pvc护套 - pvc外护套

    前言:PVC护套和PE护套的区别PVC护套与PE护套有什么区别 1、耐温与耐老化能力不同. 2、PVC含有氯,燃烧后烟味大,而且本书具有一定的阻燃性,化学式为(-CH2-...

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