1. Business expansion: Enterprises need to increase personnel to support business expansion and development. This is because of the increase of market share, demand or the start of new projects.

2. Technical demand: Enterprises need to attract more technical talents to meet the needs of technological innovation and R&D. With the rapid development of science and technology, companies need more professionals to cope with market competition and technological update.

3. Personnel flow: Enterprises are faced with resignation and retirement of employees, and need to fill vacancies through recruitment to ensure business continuity.

4. Business diversification: Enterprises are expanding their business scope and entering new market areas, so they need to recruit talents with different backgrounds and majors to meet diversified business needs. Mianyang is a prefecture-level city in Sichuan Province, China, located in the middle of Sichuan Basin. It is the third largest city in Sichuan Province and one of the economic, cultural and transportation centers in Sichuan Province. Mianyang is a famous historical and cultural city with a long history and splendid culture.