2014 National Lighting industry cumulative main business income profit margins for 6. 96, higher than the average profit margin of the main business in the light industry industry. 69 percentage points. From the comparison of small categories in the industry, the cumulative profit margin of the main business of electric light source manufacturing is 7. 5%. 3, higher than the other two categories. In 2014, the National Lighting industry accumulated profit margin of main business income. From the perspective of holding type, the profit margin of collective holding accumulated main business income was 13. 12; Followed by private Holding, the cumulative profit margin of the main business income is 7. 4, are higher than the industry average. In 2014, the profit margin of the National Lighting Industry's accumulated main business income was controlled. From the regional comparison, Hainan, Gansu and Henan ranked the top three in the National Lighting Industry's accumulated profit margin of the main business income. Among them, Henan, Sichuan and Hebei are the top three regions in the cumulative profit margin of the main business of electric light source manufacturing. According to the size of the enterprise, the cumulative profit margin of the main business income of large enterprises is 8. 5%. 84, medium-sized enterprises accumulated main business income profit margin is 7. 21, small business cumulative main business income profit margin is 5. 73. Comparison of enterprise scale of accumulated main business income profit rate in National Lighting industry in 2014