... by sus304 material. automatic control. Usually, this system contains: sand filter, active carbon filter, micro ... water, protect the RO film.4. RO system:This system contains: RO film, pressure vessel, frame, ... high pressure pump, etc. The desalting rate can reach 99.6 ... ray can kill the germ. 6. Ozone mixer tank:Through this system ,the ozone can mix with ...