... , 304-2B(food-level stainless steel)Material of outer water tank: 0.31mm, 0.4mm, 0.5mm stainless steel,or colorful armor plate, ... or PVDF Heat preservation: 55mm,60mm imported PUVacuum tube: single target vacuum tube, ... or Three-target vacuum tube,coating:ALN/ALN-SS/CUBracket: 1.2mm/ 1.5mm thickness stainless steel or galvanized steel plate or alumminum ...