... drinking waterFeature:Imported parts over 90%fully- auto system , auto stop when water is full and auto ... when on water .Auto backwash , IC microcomputer control system ,auto backwash RO film , raw water and ... .Well water conductivity ≤10Reverse osmosis desalination rate ≥99%,system desalination rate ≥97%, filtrating rate of organic matter ... 334.0753-8≤300 500L semi-automatic RO water purifying system