Every synthetic resin has its advantages and disadvantage,some resin's disadvantage is just the advantage for polysilicone.
各种有机
成树脂有各
的优点
缺点,它们的缺点正好是有机硅聚物的优点。
成树脂，人造树脂Every synthetic resin has its advantages and disadvantage,some resin's disadvantage is just the advantage for polysilicone.
各种有机成树脂有各的优点缺点,它们的缺点正好是有机硅聚物的优点。
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