For individual graduates, files are needed for postgraduate entrance examination, civil service examination, going abroad, further study, marriage and childbirth. Otherwise, they will not be able to apply for relevant certificates.
Generally speaking, the portfolio mainly includes high school and university experience, including personal resume, work resume, student file (including academic performance), unit certificate, political outlook materials, etc.
When a civil servant works in an enterprise or institution, the application and approval materials for grading, salary adjustment, appointment and removal, promotion, rewards and punishments in his career should be recorded in his file as the basis for assessment.
Refer to the above? Baidu encyclopedia-graduates' files