1. when purchasing disposable paper cups, you should recognize the QS mark. In addition, carefully check whether the product name, factory name, address, product implementation standard, production date and other contents are marked on the package. If the marks are incomplete or not standardized, it is best not to buy such paper cups.
2. purpose: distinguish between cold drink cup and hot drink cup.
3. look at the appearance: products with lighter printing color should be selected. If the paper cup has obvious ink smell, it is better not to use it, because the ink contains substances harmful to the body.
4. color discrimination: some cups use food grade base paper on the surface, but the middle layer uses recycled paper, box board paper, etc. it is recommended to tear it to see if the broken surface is yellow or contains more impurities. If the paper product is too white or contains impurities, it is not recommended to use it.
5. smell: if the paper cup smells pungent, it may be due to the cracking change of recycled polyethylene during reprocessing. Many compounds volatilize at high temperature and are easy to migrate to water, which will affect people's health. Do not use it.