1.Imported parts over 90% 2.fully- auto system , auto stop when water is full and auto start when ... and auto start when on water .Auto backwash , IC microcomputer control system ,auto backwash RO film , raw water and well water conductivity ... on line .Well water conductivity ≤10Reverse osmosis desalination rate ≥99%,system desalination rate ≥97%, filtrating rate of organic matter ,colloids bacteria ...