Legal analysis: the diploma is invalid without seal. There are three chapters on the university diploma, namely, the official seal of the school, the seal of the principal of the school and the steel seal. The university diploma is not stamped by the education department. If we want to see whether the graduation certificate can be accepted by the society nationwide, we must see whether the certificate can be queried on the higher education student information network. Graduation certificate generally refers to graduation certificate. Graduation certificate, referred to as graduation certificate, is a graduation certificate issued by relevant national, provincial and municipal education and training institutions to students who have completed the course and passed the examination. A diploma without a seal may be considered false, and the unit that needs to engrave the seal should engrave it in the engraving unit approved by the public security organ; The engraving unit shall register the engraved seal with the public security organ before using it.

Legal basis: Measures for the Administration of Public Security of Seals

Article 5 It is forbidden for any unit or individual to buy or sell seals, and it is forbidden to make or use seals illegally.

Tenth units that need to engrave seals shall go to the engraving units approved by the public security organs for engraving; The engraving unit shall register the engraved seal with the public security organ before using it.