Internet information services in the second type of value-added telecommunications services.
Technical development, technical service, technical consultation and related product production of database, topographic map and image map; File classification service, file scanning service, file digitization service, data processing and storage service, file repair and file software development; Software sales; Three-dimensional model making; Computer system integration; Network, Internet of Things technology development, technical services; Digital processing of confidential documents; Civil air defense engineering, underground pipe network engineering design, construction and technical services.