... where heat, mechanical strength and safety are a factor. For example, the glass on motor vehicles is tempered to make it strong ... :5-19mm3)Color:clear,low iron glass,F-green,Ocearn blue,Fort blue,tinted and coated glass.4)Edge:flat edge,grind edge ... :5-19mm3)Color:clear,low iron glass,F-green,Ocearn blue,Fort blue,tinted and coated glass.4)Edge:flat edge,grind edge ...