The first category is certificate information, such as ID card, degree certificate and other information. The main purpose of investigating this kind of information is to prevent candidates from forging documents.
The second category is workplace performance, including work experience, work ability and other information to avoid candidates exaggerating their work ability;
The third category is personal credit, including credit records, business conflicts of interest and other information. This kind of research is generally aimed at the top management of the company, which can avoid the situation that company secrets are leaked or even stolen by rival companies.