... / CE /SOLARKEYMWRK / ISO9001-2000 Compact Copper Coil Solar Water Heater .We put quality as the first consideration , Specification:Inner tank ... 1.Assistant tank water supply control pressured,5L 2.Electrical heater:1.5KW with thermostat 3.Controller system:water level ... vacuum tube, water tank, assistant tank, copper coil, electrical right bracket (optional), stand.High quality SUS304-2B stainless ...