Materials:
Inner tank materials: sus304-2b
Inner tank thickness: 0.5mm
Outer tank: the steel coated with zinc
Outer tank thickness: 0.37mm
Insulation: polyurethane imported from south korea
Insulation thickness: 50-65mm
Frame materials: steel coated with the zinc
Frame thickness: 1.5mm
Advantages: low cost hot water and good heat efficiency.
