... the Hg, plumbum, zinc, iron, etc. metal.Water treatment machineSS304,380V50HZ Conductivity<10us,Desalt>98% Auto PLC control,low ... 2 level water pump1000L/H 2 stage waste water treatment machineReverse osmosis system/water system/water equipment/water device/ ... and radium.3>Main equipment included that pre-treatment ,RO system,Washing system etc.(A).Pre-treatment is included sand filter ,carbon filter ...