Tempered glass is made by heating flat glass to approach its softening temperature and suddenly chilling it with jets of cold air, which distributes compression stress on the glass surfaces while tensile stress in the middle of glass. The counteraction of compression stress and tensile stress provides a very higher strength for tempered glass. Feature: 1,4-5times stronger than ordinary annealed glass. 2,In the event of breakage, the glass breaks into blunt particles causing practically no injury to the passengers. 3,It can withstand a very wide range of rapid temperature changing. Specification: Min:Diagonal line Larger than 260mm Max:bent temper:4000×2440mm temper 9000x3000mm Thickness:4-19mm Standard: GB/T9963—1998, BS6206:1981, ANSI Z.97-1984 Application:Construction, automobile, train, ship, furniture, automatic door escalator, microwave oven, refrigerator etc.