1. project background: the writing content is based on the shortcomings or problems of products in the existing industry in practical application.

2. Development status at home and abroad: describe this piece mainly according to the technical status quo, and describe the existing technical status in China. It is suggested that there should be a chart to describe the technical situation of the high-end, interrupted and low-end markets of the industry clearly. The development status of foreign countries mainly depends on searching for similar high-end technologies, which are generally the cutting-edge technologies in this industry. Words are similar to paper.

3. Development trend: try to highlight the innovative development trend of this project. Although this is the development trend of the product, in order to finally settle on this project, we should focus on describing the direction and tend to focus on the key technologies of this project.