Tempered or toughened glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass. Tempering puts the outer surfaces into compression and the interior into tension.
The advantages of laminated glass are that it can prevent theft, sound insulation, and heat insulation.
The advantages of laminated glass are that it can prevent theft, sound insulation, and heat insulation.
US 18105 
GB 13205 
CA 10702 
AU 6742 
IE 2978 
BR 1115 
NZ 976 
SG 836 
