A health certificate is generally valid for one year. Whether you apply for a health certificate in a hospital or a health certificate in a preventive health care center, you should be able to find the relevant information of the applicant within one year. As long as the applicant's identity card is shown, there is no problem to reissue it. It is possible to pay for the replacement of documents.
If the validity period of health certificate is short, it will expire soon. It is better to be new and cost-effective.