Registered Public Utility Engineer — Water Supply & Drainage
Registered Public Utility Engineer — Water Supply & Drainage (注册公用设备工程师(给水排水), China)
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Under GB 50015-2019, what is the mandatory minimum vertical physical Air Gap (空气间隙) between a potable water supply outlet and the spill level (溢流水位) of a receiving sanitary fixture or non-potable vessel?
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