... RO 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 filtration systemCartridge: PP, UDF,CTO, RO ... algae, silt, sediment2ndGAC filtration wipes off residual chlorine, THM's, unpleasant smell, pesticides, chemical poisons3rdBlock carbon remove the heterochrosis, ...