1. Information transmission service: use communication networks (such as Internet and mobile communication networks) to transmit and distribute information, such as e-mail, instant messaging, VoIP, etc.
2. Software development: develop various software applications according to customer needs, such as office software, game software, mobile applications, etc.
3. Information technology consulting service: providing information technology consulting and suggestions to customers, such as information system planning and information security consulting.
4. Data processing and storage services: processing and storing a large amount of data, such as data centers and cloud computing.