... 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 ... Having no settings to deal with regenerating dirty water and dirty water. Saving water for back purge and cleaning. High producing ability ... : FAT, SAT, DQ, IQ, OQ, PQ ect. RO water purifier