The detail of material:

Outer tank: Al-Zn coated steel sheet/color steel

Inner tank: SUS 304-2B stainless steel sheet

Insulation: polyurethane foam

Vacuum tube: borosilicate glass 3.3

Absorption coating: Al-N-Al

Stand: aluminum alloy/galvanized sheet



Product parameters:

All the above series got solar keymark from TUV Rheinland