What does the costumer numbering machine mean?

The equipment refers to the cost engineer of the mechanical department and is managed by the quota terminal of the mechanical department.

The number of the cost engineer certificate of the mechanical department is preceded by the word mechanical. You can check the authenticity of the certificate in official website, the quota station of the Ministry of Machinery. Shanghai cost engineers are managed by Shanghai Construction Engineering Consulting Association with the prefix "Shanghai". You can check the authenticity of the certificate on the official website of Shanghai Construction Engineering Consulting Association.