Finding cheaper blue-collar workers often requires considering countries with low labor costs, sufficient number of workers and certain skills. The following are some countries that are widely considered to have low labor costs and are suitable places to find blue-collar workers: 1. **India**: India has a large number of employable laborers with relatively low wages and a variety of skills in manufacturing and other industries. 2. **Bangladesh**: It is an important base for clothing and textile manufacturing, with low labor costs and a large number of workers. 3. **Vietnam**: Vietnam has attracted many manufacturing investments in recent years, labor costs are still low, and the quality of workers has gradually improved. 4. **Indonesia**: It has a large population and sufficient labor supply, and wages are relatively low, especially in the manufacturing sector. 5. **Philippines**: In addition to the service industry, the Philippines also has many workers working in the manufacturing industry, and the labor cost is competitive. 6. **Ethiopia**: It has attracted many factory construction investments in recent years, and the labor cost is competitive in the African region. While these countries offer lower-cost labor, they may also face some challenges, such as logistics, infrastructure, political stability, etc. Therefore, it is recommended to conduct a detailed market survey and risk assessment before making a decision.