Inferior napkins are soaked in water and immediately turn into slag, while wood pulp napkins still form after soaking. "The dregs indicate that the quality of the napkin is not up to standard, and it is likely to be recycled production of waste paper." According to the inspection of the quality inspection department, the inferior napkin contains various fungi, E. coli, tuberculosis, hepatitis virus, etc., which can easily cause enteritis, typhoid fever, and typhoid fever. Diseases such as dysentery and hepatitis. In addition to these bacteria causing harm to the human body, producers also add bleaching agents during the production process, which contain carcinogenic chemicals. For example, fluorescent whitening agents contain heavy metal cadmium, which can damage the blood system and impair memory. Therefore, do not use inferior napkins with scum, and try to bring your own handkerchiefs, regular paper towels or wash your mouth after meals when you eat out. When buying napkins, be sure to choose products from regular manufacturers and buy soft, impurity-free, and odor-free tissues.