3-STEP SAVING CARTRIDGE This is a patent product exploited by S.C.C to meet market. Besides the former general characters and functions, there are also functions of saving water and energy by three steps, controlling temperature, and the STEP voice is powerful and rhythmed. Its body life is ensured 500,000 cycles, and its STEP LIFE is ensured 200,000 cycles (it would be no difference from S.C.C common cartridge when STEP LIFE ended.). Its FLOW RATE (3bar W/P): first step, with the angle of 8.3? its FLOW RATE is 15%, i.e. 4.2ℓ/m; second step, with the angle of 16.6? its FLOW RATE is 58%, i.e. 16.2ℓ/m; third step, with the angle of 25? its FLOW RATE is 100%, i.e. 28ℓ/m.