... , including 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 ... quality of polish. Using mechanical and electro-chemical polish, acid clean, passivation(critical parts). Critical parts: All the critical parts are ... set documentations: FAT, SAT, DQ, IQ, OQ, PQ ect. RO water purifier