... Activated Carbon, Sodium, Sand ect. filters The Reverse Osmosis (RO) Purification System adopts stainless steel sand filter ... filter, chemical doser, water softener, micro filter, reverse osmosis membrane, back washing system, pressure adding pump, sterilizer ... PartsRO Membrane, Membrane Housing, Control Cabinet, Monometer, Flow Conductivity Instrument, High-Low Pressure SwitchPressure adding PumpCHL2- ...