Since tensile stress is present in the glass inner glass, broken glass when Qingdao 12mm tempered glass, laminated under the protection of the external stress, shards of glass particles form a honeycomb-like obtuse and difficult to wounding, because of its strength in Qingdao 12mm glass, broken easily after wounding, so called "safety glass." Glass has great balance with each other stress distribution, can no longer be cutting, grinding, drilling and other machining, so as not to destroy the glass stress balance. Tempered glass is processed together with ordinary glass or float glass process. Ordinary plate glass requirements for selected products or first grade; float glass requirements for superior product or a product. Glass production process, there are two: one is ordinary sheet glass or float glass under specific conditions Qingdao 12mm tempered glass, air-cooled by quenching or quenching processing is made. The other is the ordinary plate glass or float glass method by ion exchange, the glass surface composition changes, so that the glass surface to form a laminated layer processing is made stress. Glass windows, Qingdao tempered glass, glass Yaohui preferred by Jinan Glass Co., Ltd. Yaohui. Jinan Yaohui Glass Co., Ltd. (www.jyhhc.com/) strong, credible, in Jinan, Shandong architectural glass industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinan Yaohui into the brilliant glass and you work for a better future!