RPO service is a way of HRO (human resource outsourcing). The process of outsourcing all or part of the recruitment process to a professional company to meet the recruitment needs, including analyzing the employment concept and job requirements, communicating with the head of the employment department, regional and industry salary survey, information release, recruitment channel management, resume screening, examination and evaluation, arranging interviews, background investigation, registration and probation management, and establishing enterprise talent reserve pool.