The specific sources of external recruitment do not include

It does not include recruitment websites, headhunters, campus recruitment, social recruitment, recruitment advertisements, employee recommendation, etc.

1. Some companies may want to protect their recruitment strategies and resources to maintain their competitive advantage, so they are reluctant to disclose their specific recruitment sources.

2. In some countries and regions, discrimination is prohibited, and recruiters may worry that revealing specific recruitment channels may be considered as prejudice against certain groups.

3. Some companies may use different recruitment channels to screen candidates of a specific type or level, and revealing specific recruitment channels may have an adverse impact on the company's recruitment strategy.