1. The outer tank: Color Coated Steel, thickness 0.4mm. 2. The inner tank: SUS304/2B, thickness0.5mm. 3. The warm keeping layer: polyurethane foaming 55mm. 4. The bracket, Galvanized Steel, thickness 1.5mm 5. Vacuum tube: 47-1500 or 58-1800, Two layer. 6. Angel of bracket: as your need.