Error in querying the file number of special operation certificate. Please contact the certificate issuing authority, report the relevant information of certificate error correction according to the prompt, and show your ID card to the appraisal office that issued the certificate to find out the certificate (file) and correct the wrong number. Then go to the city appraisal center to change the record. You can change your certificate with the wrong number and affix the change stamp.

Senior engineer is the abbreviation of senior engineer. Senior engineer belongs to senior professional title and is the highest level in professional title evaluation. Professional titles are divided into three grades, assistant engineer (junior), engineer (intermediate) and senior engineer.