1.Colorful-steel shell with dun color is more corrosion resistant against ultraviolet radiation, moisture and other climatic factors
2..Enamel Tank
3.Non-fluorine Polyurethane Foaming Insulation Layer
4.Protection against dry heating / Over-temperature/ Electricity leakage                                      
5.With Encloy Element , "Kawai" brand                    
6.With Magnesium anode(AZ31)                            
7.With "RMC" pressure and temperature relief valve      
8.Super Heat Insulation with 50mm Thickness/Side