Goldsun Energy Saving Facility Co., Ltd. is a factory located in Zhongshan city Guangdong province China, who dedicated to the research, manufacture and application of energy saving water heater. Its product lines includes air to water heat pump, water to water heat pump, solar water heater and so on, which satisfy her customers quiet well. Since 1996, we have been devoted to energy saving area, especially pay more attention to design new product. Regarding to solar water heater, hot water ...