Tempered glass is the glass product obtained by heating the glass to a temperature close to the glass softening temperature (600-650°C) and then rapidly cooling it or chemically tempering it. It has good mechanical properties and thermal shock resistance.
After the clear float  glass is heat treated in a tempering furnace, its structural properties are improved, its strength is increased by 3 to 5 times, and it can withstand a certain amount of external impact or temperature difference without breaking. Even if it is broken, the whole piece of glass is broken into small honeycomb-shaped obtuse-angle particles, which are not easy to hurt people, so it has a certain safety.