1, stainless steel double stainless steel thermos cup, good insulation effect. If you use this cup to make tea, the tea leaves will be soaked in a closed environment for a long time, and various components in the tea leaves will be released as much as possible, which will not only make the taste of the tea leaves worse, but also make other shabby substances contained in the tea leaves react chemically with stainless steel. Drinking this kind of tea is obviously not a pleasure, and long-term use will also harm our health.

2. Plastic cups. At present, PC, AS, PP and Tritan are the materials that produce the most plastic cups on the market. The first three materials all contain bisphenol A, which will be released at high temperature for a long time. Some plastic cups contain other impurities, which will have a strange taste after contacting tea, so plastic cups are not suitable for drinking tea.

3, glass cups, glass cups are harmless and will not release harmful substances. After making tea, you can still see the pleasing brown color, and the tea will have no other taste. From this perspective, glass is a kind of drinkable tea. However, it should be noted that some friends like to take a cup with them and soak tea for a long time. Although glass will not release harmful substances, some harmful substances in tea, including pesticides, will be released due to long-term soaking. Drinking such tea is still harmful to the human body. After deducting these precautions, glass cups are suitable for drinking tea.