聽說做的時候也是比較簡單,就是在一頭打個洞下去,那個機器把新管從舊管裏麵推過去,不要挖溝的。
https://pipelt.com/services/trenchless-sewer-pipe-repair/
聽說做的時候也是比較簡單,就是在一頭打個洞下去,那個機器把新管從舊管裏麵推過去,不要挖溝的。
https://pipelt.com/services/trenchless-sewer-pipe-repair/
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