Solar hot water heater 1.Factory-made hot water heater 2.CE,PED;RoHS;SGS;Solar keymark 3.OEM&ODM 4.SUS304 Solar hot water heater 1. Factory-made stainless steel solar water heater2. CE ... Solar hot water heater What is Solar hot water heater ? A hot water storage tank (also geyser,hot water tank, thermal storage tank, hot water thermal storage unit, heat storage tank, hot water cylinder) is a water ...