Careful friends may have found that the market of bowls, plates, lunch boxes, cups and other glass products in addition to a small number of brands marked "heat", the majority of products and no use instructions. Many salesmen are confused with the "tempered glass" and "heat-resistant glass" concept, said more than ten dollars of tempered glass thicker than ordinary glass, you can use heating. "Glassware according to the different materials, divided into ordinary glass, tempered glass and heat-resistant glass. Ordinary glass fragile, poured into the water are likely to burst; tempered glass in the ambient temperature mutation, it is easy to burst; and heat-resistant glass Containing high temperature borosilicate, with 550 ℃ super heat resistance, can be directly into the microwave and oven use. "Zhang Jingbo said, buy heat-resistant glass should pay attention to thermal expansion coefficient, the smaller the thermal expansion coefficient is relatively hot The stability of the environment and the better the thermal shock resistance, China's thermal glass industry standard coefficient of 4.0 below.
  "At present, China's heat-resistant glassware has no clear standards.While the emergence of the so-called 'heat-resistant glass' and 'steel heat-resistant glass' products from the material composition that does not exist, consumers do not buy Has been misled. China Daily Glass Association has now developed a "proof of the use of heat-resistant glass products logo management approach", the future will be affixed to the logo glass to facilitate consumer identification.
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