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pvc塑料材质|化学视窗
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  • pvc塑料材质 - pvc是一种什么了材料

    pvc塑料材质 - pvc是一种什么了材料

    前言:PVC是什么材质?是塑料吗?PVC就是聚氯乙烯,为无定形结构的白色粉末,支化度较小,相对密度1.4左右,玻璃化温度77~90℃,170℃左右开始分解,对光和热的...

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