solar work station intelligent controller circulation pump expansion case  solar work stationIt is the circulation system for separate pressurized system. Many parts of them were imported from foreign countries with reliable quality and high efficiency. It includes...

tined water chager,water level display,water level preset,charge when water-level-low,water temperature display main functions:    1.auto check at starting: when starting the heater, there is an alarm indicating the system is ready for operation, all...