First, any formal conversation and transcripts will inevitably involve the basic situation of the parties.

The transcript is recorded according to the memories of the parties, which may be different from the facts. Therefore, formal information is needed to prove it.

In addition, to prove a person's identity, don't just rely on the story of the parties;

Two, in the investigation, it may involve adjusting the time and responsibility of the parties.

In the conversation, the interviewer needs to master these situations, and still needs these materials when identifying facts and distinguishing responsibilities. To put it more popularly: nothing is said, and official documents such as official unit appointment documents and individual division of labor shall prevail.

If the case is formally put on file for investigation, these are the most basic materials when the file is finally sorted out, and every case needs them.