Personnel seal or administrative seal. According to the personal database, the seal of the internship unit is the personnel seal or the administrative seal, and the graduation internship certificate needs to be stamped with the personnel seal or the administrative seal. After the internship expires, the unit can provide students with internship certificates. The internship evaluation shall be filled in by the Human Resources Department and stamped with the seal of the Human Resources Department. Some companies will also directly affix the official seal of the administration.