How to define industrial, scientific research and technical services and information transmission, software and information technology services?

The industry code of the enterprise in the statistical networked direct reporting system (https:/103.83.46.199/) shall prevail, and the industries include mining, manufacturing, electric power, heat, gas and water production and supply, with the first two digits of the industry code being 06-46; The first two codes of information transmission, software and information technology services are 63-65; The first two digits of the code of scientific research and technical service industry are 73-75.