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since the glass does not contain organic chemicals during the firing process, when people drink water or other beverages from the glass structure: the double-layer heat insulation design of the cup body not only maintains the temperature of the tea soup, but also does not burn your hands and is more convenient to drink; it is not necessary to worry that the chemical substances will precipitate out and be drunk in the belly because the glass surface is smooth , easy to clean, bacteria and dirt are not easy to breed on the wall of the cup, so it is the healthiest and safest for people to drink water from a glass. .the design of the double-layer glass greatly reduces the thermal conductivity of the cup body, and when used,.syi