As business people, we always choose to build businesses that can return capital quickly (ROI). Choosing a type of business that has a high ROI or that quickly returns capital will provide a sense of security for business owners and can also allocate capital sources to other businesses. Of course, a business that returns capital must have very high demand, the capital needed is not too large, efficient operational costs, and easy to reach BEP. So in your opinion, what types of businesses can return capital quickly?