... water purifier 1) PP/UDF/CTO/RO membrane 2) With pump 3) auto flush 4)9L capacity tank inside Ro water purifierFour stage reverse osmosis water ... microgranule,micro colloid and micro suspended materials. To make the water which into the RO membrane is suitable so as make ... micro impurities,colloid,metal,bacterials and so on,onlyleft the water molecule and dissolved oxygen,output ...