Tempered glass to buy three big skills

Tempered glass is a safety glass, is a pre-glass, in order to improve the strength of glass, usually using chemical or physical methods on glass surface compressive stresses, glass when subjected to the external forces begin to offset the surface stress, thus increasing the carrying capacity, wind pressure resistance of reinforced glass itself, cold and impact. Tempered glass that explode into a granular, and since the burst rate is low. In the purchaseTempered glassWhat are the considerations when we note that, following small series to share with you, that is a total of 3 steps: a look at two touching three knocks.

1, see: 3C certification on the glass sheet; see if the glass is transparent, there is no impurities, defects such as bubbles.

2, touch: the smoothness of the glass worse than ordinary glass, straining to touch the glass surface with the hand, there will be a concave-convex feeling.

3, knocking: knuckles knocking on glass, glass sound more crisp, glass sound dull.