Technical services, technology development, technical consulting, technical exchange, technology transfer, and technology promotion; software development; research and development of Internet of Things technology; manufacturing of urban rail transit equipment; manufacturing of railway locomotive and vehicle parts; manufacturing of high-speed rail equipment and parts; manufacturing of industrial automatic control system devices; manufacturing of computer hardware and peripheral equipment; system integration services; data processing and storage support services; 5G communication technology services; manufacturing of mobile communication equipment; intelligent control system integration; manufacturing of instruments and meters; manufacturing of Internet of Things equipment; sales of Internet of Things equipment.