Reverse Osmosis system water purifier Five stage water purifier with Ro 3.2gallon storage tank high quality pump Reverse Osmosis system water purifierFive stage water purifier with Ro3.2gallon storage tankhigh quality pumpFive filtration stage1,PP pre-filter2,Granular activated carbon3,block activated carbon4,Reverse osmosis membrane5,Small post carbon filter Reverse Osmosis System-LW-RO-50PB