... filtration system with pump, with four ways shutoff valve and manual valveCartridge: PP, CTO, UDF, RO membrane and T33 cartridgeCapacity ... taste, Will use the micropore of the active carbon filter to holdback the microgranule,micro colloid and micro suspended ... the ro membrane are longer 4th1 micron pp sediment filter cartridge5thRO membrane,remove the micro impurities,colloid,metal,bacterials ...