Intelligent Controller, Frequency Conversion Controller, Switch Power Supply manufacturer / supplier in China, offering DC Inverter Controller PCBA for Double System 2.2kw Low Temperature Water Heater and Cooler, DC Inverter Controller PCBA for Dual System 2.2kw Low Temperature Water Heater and Cooler, DC Inverter Heat Pump Control PCBA for 4.7kw 4 Pipe Chiller and so on.