... clean.6. Integrating water flow indicator, TDS indicator, pressure indicator, control panel7. China Top Brand or world ... 200L food-grade resin and 180 automatic control valve(Total hardness≤300PPM)Micron PP FilterSUS304 tank Φ330 ... optional SIEMENS / MISTSUBISHI / ABBOthersFlow metre, TDS metre, pressure metre, electromagnetic valve, etc.OPTIONALChemical dosing system, UV sterilizer, ozone sterilizer, ...