• Tingyi Cayman Islands Holdings average operating margin for 2017 was 5.83%, a 34.95% increase from 2016.
• Tingyi Cayman Islands Holdings average operating margin for 2016 was 4.32%, a 41.86% increase from 2015.
• Tingyi Cayman Islands Holdings average operating margin for 2015 was 7.43%, a 24.87% decline from 2014.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.