Can the sterilized tableware with scratches be used?

When we ate, we found that some of the disinfection tableware provided by the merchants had scratches, and some users would ask for a replacement. Why is this? Can it be used. Disinfection tableware scratches will precipitate harmful substances. When using sterilized tableware, if scratches appear, the glaze in the porcelain plate may be exposed. If the tableware with scratches is used to hold food such as acid and high temperature, it is likely to precipitate harmful substances such as heavy metals. If the use of inferior, unqualified disinfection tableware, the harmful substances will be precipitated, and with the food into the human body, a long time, will cause chronic poisoning. Lead Compounds in glazed color ceramics can be dissolved by acid. When food is in contact with tableware, lead may be dissolved by organic acids in food. Before using new disinfection tableware, it is best to boil it in boiling water for 5 minutes for sterilization and disinfection, and then soak it in vinegar at normal temperature for 1 ~ 2 hours. This is because ceramics will dissolve toxic substances contained in some tableware when they encounter acidic substances. For disinfected tableware that is not at ease, it can be soaked in vinegar for several hours. If it is found that the color has obvious changes, it should be abandoned. In daily life, people use a large amount of disinfection tableware. They must polish their eyes and try not to use it if there are scratches.