This water tank's Specification:

1). Inner tank: SUS 304-2B food grade stainless steel sheet, thickness:0.41mm

2). Outer tank: galvanized steel/ color steel, thickness:0.40mm

3). Bracket: galvanized sheet with electrostatic plastic coating, thickness: 1.5mm

4). Vacuum tube: high boron silicon glass with aluminum/red copper/ stainless steel bloomed, ST=300;

5). Insulation layer: Polyurethane, thickness: 50mm

6). Spiral coil: use red copper to heat the water, length: 40M

7). Package: cartons with foam