| 1. Sectional metal heat-pipe vacuum tube (size: ¢58mm*1800mm); No water in vacuum tube, no water dirty, prevent freezing. 2. “crystalline inner tank”: working Pressure: ≤ 0.6Mpa ( the steel plate and macromolecule material connection very well) 3. Insulation : polyurethane integral foaming with 55mm thickness 4. Material of outer tank: aluminizing zinc plate with 0.35mm thickness 5. Material of support: Stainless Steel Profiled Bar with 1.2mm thickness 6. using the electric heater system, it can be lasting used in the cloudly, rainy and snowy days. 7. Packing: export carton |