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1. It depends on the name and address of the manufacturer on the package of the product. The standard, date and period of validity of the product shall be indicated. If the package is too poor and the printing is too rough, it is better not to buy it.

2. Products with full shape, no wrinkle, certain thickness and no denaturation should be selected. Pay attention to the elasticity of injection molded beverage cups. Don't buy too brittle ones. If the disposable milk tea cup is easy to tear, or fold once there are obvious white creases, then most of them are unqualified products.

3. Smell for odor. Some people think that plastic itself has a "plastic smell", as long as the taste is not heavy, it doesn't matter. In fact, the cup made with qualified raw materials will not have any smell.

4. See whether the package is marked with cold water cup, hot water cup, and temperature range, which should be indicated by regular manufacturers.

5. Don't covet colorful cups, be careful to drink ink when drinking water.

6. Don't buy too much at one time. You should buy after using it. After opening the package, the remaining cup should be stored in an airtight box to minimize secondary pollution.

7. When consumers buy milk tea cups, they should go to large shopping malls and supermarkets, choose famous brand products produced by large enterprises, and don't patronize the Sanwu products of small stalls.