剧情介绍

3 3改性(xìng )沥青防水(shuǐ )卷材上下层搭接用长把刷把稀释过的基层处理剂均匀的涂刷在干净和干燥的基层表面上,复杂部位用油漆刷刷涂,要求不露白(bái ),涂刷均(jun1 )匀。干燥4详情

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