Specification:

1) Inner Tank: 0.4mm stainless steel (SUS304/2B)

2) Outer Tank: 0.4mm Galvanized steel alloy/Stainless steel 0.4mm

3) Insulation layer: 40mm polyurethane

4) Vacuum tubes: 47*1500mm

5) Remark: 50pcs vacuum tubes/set