The cup body of the double-layer glass is made of high-quality borosilicate glass, which is fired at a high temperature of more than 600 degrees. Smooth and especially easy to clean. It is food and catering grade glass, which can hold 100-degree hot water, tea, carbonated, fruit acid and other beverages,has no peculiar smell and does not carry odors; it is a relatively new type of environmentally friendly glass.
A notable function of the double-layer glass is heat insulation. When you hold hot water directly on the wall of the glass, you will not feel hot. This problem is solved by adopting a double-layer structure, which reduces the thermal conductivity of the glass body and improves comfort. It also improves the insulation effect of the glass, which is the best of both worlds.