Properties: 1) Safety (tempered glass): when broken, it spits into tiny harmless pieces . 2) Strong intensity: heat-strengthened glass is approximately twice as strong as annealed glass of the same thickness, and tempered glass is about 4 times . 3) Outstanding performance in resisting thermal stress and wind-load . 4) Tempered glass cannot be cut, drill hole and other further processed . 5) Tempered glass can be printed with special logo and silk-screen printing on the rear surface.