Flow rate: Under water pressure of 3bar,flow rate of bathtub faucets(without attachment) more than 0.38L/S; Flow rate of Washbasin or washing purpose (without attachment) more than 0.24L/S; Washbasin or washing purpose with attachment more than 0.17 L/S. Cartridge cold-hot fatigue test: Through 450 circulated tests, keep 60s no leakage and distortion under pressure of 25 bar when water outlet in open position; keep 60s no leakage when outlet blocked up at pressure of 4bar.