Feasible. Gross profit margin is an important financial indicator, which reflects the relationship between the company's sales revenue and gross profit. By analyzing the change of gross profit margin, we can know the company's product profitability, cost control level and market competitive position. In the graduation thesis, you can first introduce the concept and calculation method of gross profit margin, and then analyze the historical gross profit margin of the company to understand the recent changes in its profitability. Moreover, in the graduation thesis, we can analyze and study the gross profit rate from many angles to show our financial analysis ability and comprehensive quality.