Does the employee background investigation service include? # The identity authentication # The passport authentication # The driver"s license certification # The degree of certification # The professional qualification certificate # The working experience in certification # The working ability of certification # The criminal record check # The litigation records check # The labor arbitration record verification # The drug records check # The personal credit check # The verification of financial irregularities # The verification of bribery # The business records check # The tracking network behavior # The background survey of graduates # The psychological assessment