Glass is inherently brittle material, so in order to increase its usability, and above all to increase the safety of its use, we offer glass tempering. Tempering involves heat treatment of glass at a temperature between 620 and 680°C, followed by rapid air cooling. This process does not change the external appearance of the glass but only increases its strength. Tempering process can be applied to float glass, stained glass, coated glass and ornamental glass. Tempering process increases impact resistance of glass and its resistance not only to mechanical factors but also to stresses connected with surface temperature changes. Mechanical strength of tempered glass is 5 - 7 times higher than mechanical strength of ordinary glass. Tempered glass can be successfully used in furniture, façades, shower stalls, white goods.