The difference between Heat-strengthened glass and Tempered glass: Heat-strengthened glass is annealed glass through high temperature and quenching, the surface layer of compressive stress is less than 69 MPa, so that the mechanical strength of the glass several times increased, that is, semi-tempered glass. The surface stress of semi-tempered glass is 24 ~ 69 Mpa. After its broken and ordinary glass, the product is characterized by the strength of semi-tempered glass is more than 2 times annealed glass. Tempered glass is annealed glass through high temperature and quenching, surface formed strong compressive stress, so that the mechanical strength of glass several times increased, that is, tempered glass. The surface stress of toughened glass is 69 ~ 168 Mpa. It is characterized by broken small obtuse particles, will not cause significant harm to the human body. The strength is 4 times or more than the strength of ordinary glass. With good thermal stability, ordinary glass after tempering can withstand the temperature difference of about 180°C. The disadvantage of tempered glass is that it is easy to explode.1. Safety: When broken, the fragments are radial, and each fragment extends to the edge. It is not easy to fall off. It is safer, but it does not belong to safety glass. 2. Deflection: The deflection of semi-tempered glass is larger than that of tempered glass. 3.  Thermal stability: Thermal stability is also significantly better than annealed glass, ordinary glass can withstand the temperature difference of about 75°C after semi-tempered treatment. Semi-tempered glass will not self-explode.Heat-strengthened glass is suitable for curtain wall and exterior window in architecture, and can be made into toughened coated glass, whose image distortion is better than that of toughened glass. But be aware that semi-tempered glass does not belong to the scope of safety glass. It is clearly pointed out in the "Regulations on the Management of building safety glass" that "single piece of semi-toughened glass (heat-reinforced glass) does not belong to the safety glass", because once it is broken, it will form large fragments and radial cracks. Although most fragments do not have sharp corners, they will still hurt people, and can not be used for skylights and occasions where human body impact may occur.The company's products have passed China compulsory quality system CCC certification, Australia AS/NS2208:1996 certification, and Australia AS/NS4666:2012 certification. In addition to meet the national production standards, but also meet the overseas market quality requirements.