Tempered glass is made of high-quality float glass. Glass is heated at approximate temperature of 700⁰C and cooled rapidly. Glass is cooled by source of evenly cold air across the surface. High speed cold air created tempered glass.

     During cooling, the glass surface in a state of high pressure and the central core is placed in tension.

     Tempered glass is physically and thermally stronger many times than ordinary glass with the same type and the same thickness. After being heated, the tempered glass is capable of resistance to impact, wind pressure, thermal resistance and high reliability than ordinary glass.