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