The technical service fee should belong to the category of modern service industry after the reform of the camp. Technical service mainly depends on what kind of service fee. Under the modern service industry, there are two parts involved in technical service fees, one is research and development and technical services, and the other is information technology services.
Software consulting service 304020 102, software maintenance service 304020 103.
So which code is it, you should look it up in the code table and find a similar one.