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See Chinese contents: GB 30717-2019 GB 30717-2019: Minimum allowable values of water efficiency and water efficiency grades for squatting pans
This standard specifies the water efficiency limit value, water saving evaluation value, water efficiency grade, flushing function requirements, test methods of squatting pans. This standard is applicable to the water efficiency evaluation of squatting pans (not including infant and #39;s type), which are installed on the cold water supply pipelines within buildings AND have the hydrostatic pressure of the water supply not greater than 0.6 MPa.
