The cup in a shopping mall can be said to be a great variety. What kind of cup is the best? The first choice for a cup should be a glass. Don't think the glass is just beautiful. In all the cups, the glass is the healthiest. Glass does not contain organic chemicals in the firing process, when people with a glass of water or other drinks, do not have to worry about the chemicals drink into the stomach, and the glass surface is smooth, easy to clean, not easy to breed bacteria and dirt on the wall of the cup, so people with a glass of water is the most healthy, the most secure.
But for the cups of other materials, though the colorful cups of ceramic are pleasing, there are hidden dangers in those bright colors, especially the inner walls are glazed. When the cup is filled with boiled water or high acid and alkaline drinks, the toxic heavy metals such as lead in these pigments are easily dissolved in the liquid. People will drink into the liquid with chemical substances, which will do harm to the human body.
Plastic often add a plasticizer, which contains a number of toxic chemicals, when using plastic cups of hot water or boiling water, it is easy to dilute toxic chemicals into the water, and the internal microscopic structure of plastic has many pores, which hides dirt, cleaning is easy to breed bacteria.
Therefore, in the selection of plastic cups, we must choose the cup which is made by the national standards of the food grade plastic.