又粗又长又硬爽死我了动态图

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PVDF管材

PVDF管材

添加日期:11-09-25

PVDF管材采用進口純PVDF原料生產。PVDF管材(聚偏二氟乙烯)是透明或半透明的結晶性聚合物,結晶度68%左右,氟含量為59%,分子量25-100萬。..

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又粗又长又硬爽死我了动态图
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