... auto start when no water. auto backwash. IC microcomputer control system, auto backwash RO film, raw water and well water ... water conductivity<10us/cm3. reverse osmosis desalination rate>99%, system desalination rate>97%, filtrating rate of organic matter, colloids, ... Equipments Promake can manufacture 1) water treatment equipment (RO system) 2) Filling machines 3) Vacuum emulsifying mixer 4) Perfume ...