The lack of materials, especially glass plates and various glass products, has penetrated into the various social life In several aspects. Since the 20th century, industrial glass products and edible glassware have been used

Toughened glass is safety glass. It cools instantaneously when the glass is heated to near softening state according to the principle of material tempering. The toughened stress layer is generated inside the glass, which increases the resistance to pressure and impact on the surface of glass. After being broken, the particles are about the size of corn grains, which basically does no harm to human body

Due to careless handling, installation and maintenance of glass surface and edge, it is easy to damage the stress of toughened glass, such as burst, surface corrosion and edge collapse, which leads to the self explosion of tempered glass.