... sand filter, active carbon filter, micro filter, RO system, UV sterilizer, Ozone mixer tank.1. sand filter:This filter can remove the ... remains in the water, protect the RO film.4. RO system:This system contains: RO film, pressure vessel, frame, high pressure pump, etc. The desalting rate can ... UV ray can kill the germ. 6. Ozone mixer tank:Through this system ,the ozone can mix with the water better, ...