防止contractor 乱来。不申请,风险就是没做好漏水,没做好漏风,没做好变形。如果是承重墙,别过几年这个地方的屋顶下陷你就惨了。
防止contractor 乱来。不申请,风险就是没做好漏水,没做好漏风,没做好变形。如果是承重墙,别过几年这个地方的屋顶下陷你就惨了。
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