The business screening and initial screening of the employing department is a general screening, which mainly depends on resumes to screen out candidates who meet the basic information.

The second interview and business screening of the personnel department are mainly aimed at the availability of technology and candidates. This is mainly reflected in the job seeker's industry, position, performance, education and training background. For example, an enterprise wants to recruit a sales engineer, whose industry is engaged in the sales of large-scale engineering equipment, and its customers are mainly builders and engineers.