The zinc galvanized steel pipe gone under a ban for some indoor water supply in Shanghai and its alternatives were discussed.
本文探讨了上海市在部分建筑内禁止使用镀锌管作给水管之后，使用什么管材这一问题。
The zinc galvanized steel pipe gone under a ban for some indoor water supply in Shanghai and its alternatives were discussed.
本文探讨了上海市在部分建筑内禁止使用镀锌管作给水管之后，使用什么管材这一问题。
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