2. Work experience survey, mainly including whether the unit and post are true, whether the term of office is consistent, whether the reason for leaving is true, whether there are labor disputes, training agreements, non-competition agreements, etc.
3. Job performance survey, mainly including the evaluation of the respondents' previous direct superiors, peers or subordinates, main job responsibilities and completion, advantages and disadvantages of work ability, work enthusiasm, etc.
4. Business background investigation, which investigates the entrepreneurial experience of candidates, mainly to investigate whether they have had serious commercial fraud or breach of contract.