Before the expiration of the validity period of the provincial certificate, the provincial supervisor will return all the information of the provincial certificate personnel to the enterprise database, and the enterprise will re-fill in the updated information such as performance, report it to the ministries and agencies again, and re-issue the certificate after passing the examination. The original certificate that has not been applied for within the time limit is invalid. The provincial certificate does not require continuing education or registration. If you want to re-obtain the certificate after the certificate expires, you must re-attend the training course for supervision engineers of ministries and agencies and re-issue the certificate after passing the training.