-Inner Tank: SUS304-2B stainless steel,1.2mm -2.0mm thickness
-Outer Tank : Colored Plate/Stainless Steel,0.4mm thickness
-Insulation Layer: Polyurethane Foam 55mm
-Flat Plate Collector: Black Chromium/Blue Titanium
-Frame: Aluminum Alloy/Galvanized Sheet/Stainless Steel