The fireproof glass is treated by special chemical treatment at high temperature for more than 20 hours ion exchange, replacing the metal sodium of the glass surface, forming a chemical steel stress layer. At the same time, after physical treatment, the glass surface forms a high-strength compressive stress, which greatly improves the impact strength and presents tiny particles when the glass is broken. State, reduce damage to human body, intensity is 6-12 times of ordinary glass, 1.5-3 times of tempered glass.