Features: High strength: the bearing strength of tempered glass is 4 ~ 5 times of that of ordinary glass; Safety: once the glass is broken, the fragments are in the shape of obtuse angle particles to protect people from injury; Thermal stability: heat shock resistance, able to withstand temperature change within 220 ° C. Specification range: Thickness: 3 ~ 19mm "X2440" x2440mm (max) Quality standard: GB 15763.2, Chinese standard. EN 12150.1, European standard. EN 12600, European standard. ANSI Z97.1, American standard. AS/NZS 2208, Australian standard.