... water desalting( make drink water from bitter &salt water and seawater), purified water (purification of cooling water and boiler water), ultra-pure water (water for paint illuvial and semiconductor),water for ... with regenerating dirty water and dirty water. Saving water for back purge and cleaning. High producing ability for ultra-pure water. No need ... : FAT, SAT, DQ, IQ, OQ, PQ ect. RO water purifier