• Yankuang Energy Group average return on investment for 2020 was 4.7, a 11.32% increase from 2019.
• Yankuang Energy Group average return on investment for 2019 was 5.3, a 7.5% decline from 2018.
• Yankuang Energy Group average return on investment for 2018 was 5.73, a 114.61% decline from 2017.

Roi - return on investment can be defined as an indicator of how profitable a company is relative to its assets invested by shareholders and long-term bond holders. Calculated by dividing a company's operating earnings by its long-term debt and shareholders equity.