is a kind of prestressed glass, to enhance the strength of the glass, usually using chemical or physical methods, the glass surface compressive stress is formed, when the surface of the glass to withstand external force first counteract stress, thus improving the carrying capacity and enhance the glass itself wind pressure resistance, cold and heat resistance, impact resistance and so on. 

Advantage:

a)Resistance to thermal shock and chemical properties than ordinary glass of 2 to 3 fold increase

b)Generally can withstand temperature changes over 150LC, to prevent heat burst had a significant effect.

c)More flat than Mechanical tempered glass, suitable for flat high demanding customers.

d)Is able to temper very small pieces and very thin glass, like 0.2mm above thickness of glass is temperable.