发布时间:2025-01-19 11:05:13
需要,一般给水管采用PPR管,PPR管一般暗敷墙内,所以需套开槽;排水管用管卡固定,不套开槽。
历年贷款基准利率表图一览表1949年至2020基准贷款利率变化明细
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