Compact non-pressurized solar water heater

Inner tank: sus304-316L food-grade stainless steel ，lase welding technoligy.                                  

Vacuum tube:High -efficient coating 47x1500/28x1500mm vacuum tube,hail-resistance:25mm-40mm                   Outer tank: Painted/aluminum-zinc coated steel/sus 304 stainless steel,free welding technology               Insulation layer:high density polyuretane ,72 hours efficient heat preservation                               Flame: Stainless steel/alumimum alloy/galvanized steel.Anti-corrosive and anti-ultraviolet                   Accessories :reflector/electric heater /anoda magnesium stick /auxilian feed-water tank/solar controller