Glass is very common in life, but our impression is very fragile, very easily broken, and very sharp, easy to cut the hand, and even a lot of people scratch glass, so that the heart is more shadow, these easy tobroken glass are not steel, are generally ordinary people home windows or other places, not tempered glass is very fragile indeed, sometimes gently impact is not broken, and broken showed a sharp knife-like,careful it will cut your hands, as technology advances, glass technology has a higher level, and now very mature technology tempered glass, tempered glass commonly known as safety glass, hardness than the original hard several times, even if it is broken by small particleslike, will not harm people, laminated glass is also very safe glass, two glass with plastic clip together will not fall off, broken, other wire glass, hollow glass are nowcommonly used safety glass, people now have many choices, do not worry about the safety of the glass。