• Tingyi Cayman Islands Holdings average return on investment for 2017 was 5.29, a 69.01% increase from 2016.
• Tingyi Cayman Islands Holdings average return on investment for 2016 was 3.13, a 44.89% increase from 2015.
• Tingyi Cayman Islands Holdings average return on investment for 2015 was 5.68, a 41.02% decline from 2014.

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.