The thermal insulation of a double-layer glass cup is similar to the principle of a thermos, that is, hollow: the inner glass of the double-layer glass carries water, and the air or vacuum underneath is separated from the outside. The innermost glass can block the heat consumption. In the end, it reaches It has better heat insulation effect than ordinary glass, but it only has better heat insulation effect than ordinary glass, and it cannot achieve long-term heat insulation.
        The raw material of the double-layer glass cup is high borosilicate glass, food-grade catering glass, which is fired at a high temperature of 600 degrees. It is usually made of high borosilicate glass tubes, large and small upper and lower tubes, which are baked by technicians in a sealing machine. It is a new type of environmentally friendly tea cup, which is more and more popular. As a double-layer glass cup, it has become the best tea set for drinking water and making tea, especially for brewing various famous teas. The tea set is crystal clear and not only suitable It can be viewed, and the effect is very good. At the same time, the glass is of high quality and low price, which is very popular among consumers，glass cookware .
Double-layer glass
The double-layer glass has the following advantages:
1. Material: The glass body is made of high-quality borosilicate crystal glass tube, which has high transparency, good wear resistance, smooth surface and easy cleaning.
2. Structure: The cup body is designed with double-layer heat insulation, which can keep the temperature of the tea soup without burning your hands, making it more convenient to drink.
3. Process: Burning at a high temperature of 600 degrees, high adaptability to temperature changes, and not easy to burst.
4. Hygiene: Food grade standard, can hold hot water, tea, carbonic acid, fruit acid and other beverages with high temperature of 100 degrees, anti-corrosion of malic acid, no peculiar smell.
5. Leak-proof: The inner layer, outer layer and sealing ring of the cup cover meet the safety standards and are accurately leak-proof.
6. Suitable for drinking tea: green tea, black tea, Pu'er tea, scented tea, craft scented tea, fruit tea, etc. The color of the soup can be seen to improve the quality of life.
7. Advertising cups, gift cups, image cups, promotional cups, etc. can be customized according to customer requirements