1:Stainless steel solar water heater 2:Aluminum Alloy frame 3:CCC,CE,ISO9001:2000 4: ... Produce as customer's requirment Low pressurized solar water heaterSpecifications1.Solar Keymark,SGS,CE,CCC,ISO9001 2.manufacturer, independent ... . This system matched with vacuum tube solar collector. Water flow inside and complete a circulation on it own without given pressure, that ...