... , durable and easy to clean.6. Integrating water flow indicator, TDS indicator, pressure indicator, control panel7. China Top Brand or world ... Tengen Or optional SIEMENS / MISTSUBISHI / ABB / PanasonicOthersBuilt-in flow meter, TDS meter, pressure meter, Solenoid valve, etc.OPTIONALChemical dosing system, UV sterilizer, ozone sterilizer ...