Beijing: Beijing public health practitioners' health examination certificate: valid for one year from the date of passing the medical examination. Re-inspection and replacement must be carried out within the prescribed time limit every year.
Shanghai: There are two kinds of health certificates: one is general health certificate. Then the other is the food health certificate, which is needed by people in the catering industry. The health certificate is valid for one year, and it will be invalid after one year.
Guangzhou: The health certificate is valid for one year. After the expiration, it needs to be re-examined, paid and obtained.
Shenzhen: the health certificate is valid for one year, and it needs to be re-applied after expiration.