Who should I find to stamp the internship certificate? Department head?

Generally speaking, the practice seal is not very strict, as long as it is the company seal, whether it is finance or office, but the personnel seal is more convincing. But if you rush to the company to build it, the company will definitely not build it, or if you have acquaintances in the company or you do practice in the company, then the company will generally stamp you.

The following are:

Practice appraisal is a certificate issued by the unit where students participate in practice during their school days. It needs to be stamped with the official seal of the unit, which can be used as a reference for the employer when applying for a job in the future.

Documents supporting nature

Content-internship unit, internship time and internship post

For use-it can be used as a reference for employers to apply for jobs in the future.

References:

Practice Appraisal-Baidu Encyclopedia