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挤塑板密度要求是多少_家居日记
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挤塑板密度要求是多少

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挤塑板密度要求是多少 挤塑板的密度要依据阻燃程度来判断，正常密度在21千克一立方米到28千克一立方米，这种板材的内部是独立密闭式的气泡构造，能够抵御高压，吸水率


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