Aerospace grade low-temperature welded technique and� Vacuum Glass block gas leakage through the strong combination of chemical agents. 50 year Long Life Vacuum Glass� has perfectly retained the low radiation and energy-saving activity of nano silver film; The disadvantages of air leakage of organic glue and metal edge sealing are avoided, and the international problem of oxidation failure of Low-E glass is eradicated. ICESUN� Tempered Vacuum Glass has passed the certification of American IGCC. The condensation temperature of Vacuum Laminated Glass is below - 50 C, and that is why we called it Anti-Condensation Vacuum Glass, really the best choice as Building Glass.