1. Business expansion: With the continuous expansion of the company's business, Chengdu Yin Wei needs more employees to handle new projects and tasks. This expansion may come from new customer cooperation, the growth of market demand, or the needs of the company's own strategic development.

2. Employee turnover: In the information technology industry, employee turnover is a common phenomenon. Due to fierce competition in the industry, employees may leave their jobs because of better treatment, broader development space or other personal reasons. In order to maintain the continuity of the company's operation, Chengdu Yin Wei needs to constantly recruit new employees to fill the vacancy.

3. Seasonal demand: Some businesses may have seasonal characteristics. For example, the customer service position in the e-commerce industry will require a large number of people in the promotion activities. In order to cope with this seasonal demand, Chengda Yinwei may need to increase recruitment in a specific period.

4. Talent reserve: In addition to meeting the current business needs, Chengdu Yin Wei may also reserve talents through recruitment. This can provide strong talent support for the company's future development and ensure that the company can respond quickly when facing new opportunities and challenges.