How many kinds of health certificates can be used in general?

Two kinds, no. There are two kinds of health certificates: general health certificate and food health certificate. Food health certificate is necessary for people in the catering industry, which is mainly applicable to catering, food, beauty, washing and pharmaceutical production enterprises. The general health certificate is used by employees in the service industry and does not directly touch food. The two types of health certificates are not universal, and the health standards and requirements in different regions are also different. Health certificates in some areas are only applicable to local medical institutions, but not recognized in other areas.