Building code 要求有防水层和屋面沥清瓦.防水层是简单的一层沥清纸式蛇皮袋材料.稍有常识的人做的话,一般很难漏雨.
Building code 要求有防水层和屋面沥清瓦.防水层是简单的一层沥清纸式蛇皮袋材料.稍有常识的人做的话,一般很难漏雨.
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