1. Research and development project report. When an enterprise has research and development, it will have a project report. This is the beginning of research and development. If the internal project is approved, it will be signed by the corresponding internal manager. If the government projects are approved, there will be a corresponding report. Government project approval documents;
2. Research and development results. There are patent and software copyright certificates issued by relevant national departments as proof;
3. Relevant R&D expenses are reflected in the special audit report for high-tech certification;
4. Other such as Meeting minutes, etc.