有儀器無損檢測水泥層厚度和分布。不知城市是否有此類免費服務或便宜的檢測商家。打官司或談判最好有第三方證據。

來源: IEbird 於 2024-10-08 15:39:55 [舊帖] [給我悄悄話] 本文已被閱讀：次

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