As we all know, there is a quality and safety certification mark 3c on each glass. Today, let Yao Decoration Engineering Co., Ltd. Nanjing fly for everyone Secret identify quality problems tempered glass: glass is ordinary annealed glass to cut to the desired size, then heated to near the softening point, then obtain rapid and uniform cooling. After treatment of steel glass surface to form a uniform compressive stress, and the internal tensile stress is formed, the performance of the glass can be greatly improved, more than three times the tensile strength of the latter, the impact force is more than five times the latter. It is this characteristic glass door installation, stress characteristics become an important symbol of true and false identification of tempered glass, glass that can be seen through polarized light colored stripe on the side of the glass sheet, and in the surface layer of glass observation, you can see the black and white spots. Polarizing sheet can be found at the camera lens or glasses, to adjust the light source observed, it is easier to observe. According to Nanjing Yiu-glass professional insiders explained that the glass is safety glass, it is a kind of prestressed glass, to enhance the strength of the glass, usually using chemical or physical methods, the glass surface compressive stress is formed, glass bear First, when an external force offset surface stress, thereby increasing the carrying capacity of reinforced glass itself wind pressure glass door company, cold and heat resistance, impact resistance and so on. Nanjing Nanjing Yiu glass factory has measuring glass doors, manufacture, installation and technical personnel for the integration of Business: (various mirrors glasses, tea mirror, gray mirror, black mirror, etc.) glass, office partitions, paint glass mirrors glass doors offer a glass door (door sensors, framed glass doors, floor spring doors, hanging doors, sliding doors, and other series) production of glass, stainless steel manufacture, sales, installation maintenance, Storefront production. Glass door company, Yiu glass, glass doors offer from Nanjing Yiu Decoration Engineering Company Limited. Nanjing Fei Yao Decoration Engineering Company Limited (www.feiyaoboli.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole alliance network operators, business alliance customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!