Railway transport auxiliary activities; sales of railway transport infrastructure equipment; sales of railway transport equipment; sales of railway locomotives and rolling stock; sales of railway locomotive and rolling stock parts; rental of transport equipment; leasing of mechanical equipment; repair of specialized equipment; general cargo warehousing services (excluding items requiring permits such as hazardous chemicals); engineering management services; foreign-contracted projects; loading and unloading; engineering technical services (excluding planning management, survey, design, and supervision); technical services, technical development, technical consulting, technical exchange, technical transfer, and technical promotion; software sales; business training (excluding training requiring permits such as education and vocational skills training); enrollment assistance services; conference and exhibition services; consulting and planning services; project planning and public relations services; port cargo loading and unloading activities; port tallying; domestic cargo transport agency. Licensed items: Maintenance of railway locomotives and rolling stock; design of railway locomotives and rolling stock.