Extended data
One of the rules for attaching a certificate is to hang the certificate without stamping it: generally speaking, the attached unit is an enterprise or institution with qualification upgrading, qualification updating and qualification guarantee. After the holder (especially the national registration certificate) has reached an agreement with the user, the registration certificate (professional title certificate) will be kept by the user, and individuals can borrow and return it reasonably (such as exams).
Enterprise qualification refers to the qualification that an enterprise should have to operate a certain industry and the quality grade standard corresponding to this qualification. Enterprise qualifications include personnel quality, technical and management level, engineering equipment, capital and benefits, contracting operation ability and construction performance.