... chemical washing deviceFlow chart of the RO Water Treatment System: ParametersProductOne-stage Automatic RO(Reverse Osmosis) water ... pressure metre, electromagnetic valve, etc.OPTIONALChemical dosing system, UV sterilizer, ozone sterilizer, and built-in RO membrane washing device ... inquiry. 2.Besides water treatment system, we also offer UV Sterilizer, Ozone Sterilizing System, full set 0.3~2. ...