1)Inner tank:stainless steel SUS304-0.5mm
2) Vacuum tube:QB-AL-N/AL-58-1800 3) Outer tank:painted steel-0.4mm/aluminum-zinc coated steel-0.45mm/stainless steel SUS304 4) Frame:coated galvanized steel-1.5mm;stainless steel SUS430-1.55mm,aluminium alloyl-1.5mm. 5) The material of insulation:polyurethane 50mm/60mm/65mm. 6) The reflector:aluminum component;AL99.85% surface oxidation;stainless steel |