... and easy to install. Its independent technology prevents the tank from ponded water, freezing and deformation Design and pack ... steel, PVDF>=70%,0.5mm thickness.2.Inner water tank: imported SUS304-2B stainless steel(food class),0. ... heat loss.4.Heat Preservation: Polyurethane Foam,50mm thickness, lasting 72 hours5.Stand: galvanized steel,1.5mm thicknessmodelVacuum tubeAbsorbing area capacityWater tank ...