... .The main machine adopts American high effective low-pressure compound film, with single film salt removing degree ... micro filter, reverse osmosis membrane, back washing system, pressure adding pump, sterilizer, water tank and pipe fittings.Technical ... Control Cabinet, Monometer, Flow Conductivity Instrument, High-Low Pressure SwitchPressure adding PumpCHL2-20CHL4-20CHL8-20CHL16-20Micro filter core ...