Profile: Haining Joyon Solar Water Heater Co., Ltd. is a manufacturer of solar water heaters and components. We are an ISO 9001:2000 certified company. We develop and produce 3.3 high-boron silicon glass tubes, and three-high vacuum collector tubes. Our products include non-pressurized solar water heaters, integrated pressurized solar water heaters, split pressurized solar water heaters, solar collectors, vacuum tubes, and air heat pumps. Compact non-pressurized vacuum tube solar heater is made up of vacuum tubes, tank, stainless steel frame, silicon seal, and controllers. Non-pressurized solar water heater adopts imported stainless steel 304. The tank and frame are all food grade 304 stainless steel. The material is UV-resistant & corrosion-resistant, and is suitable for different areas. Air source heat pump hot water system consists of a water storage tank and a heat pump. The heat pump is either mounted on top of, or adjacent to the water storage tank. The heat pump consists of a condenser located around the outside of the water storage tank, a compressor, and an evaporator.