It's food grade High borosilicate glass is food grade. High borosilicate glass is a kind of glass with enhanced fire resistance, and its manufacturing process needs to add glaze sodium silicate sand, soda water and lime. Because the melting temperature of high borosilicate glass is higher than that of ordinary silicate glass, some new technologies and processes are needed. This kind of glass has good fire resistance and high physical strength. Compared with ordinary glass, it has no toxic and side effects, and its mechanical properties, thermal stability, water resistance, alkali resistance and acid resistance are greatly improved. In addition, the chemical composition of high borosilicate glass is very compatible with food, so manufacturers will make different types of containers according to the different needs of making various foods.