How to send a notice that the health certificate is about to expire?

1, clearly indicate the subject in the notice title, for example, the health certificate is about to expire and a new notice is needed.

2. At the beginning of the notice, use proper address to express greetings, such as: Dear employee/customer, hello.

3. Briefly explain the situation that the health certificate is about to expire, and point out the expiration date and the action to be taken.

4. Provide detailed replacement procedures and requirements, including documents to be prepared, submission deadline, replacement location, etc.