The business scope includes general projects: sales of construction machinery; Maintenance of electronic and mechanical equipment (excluding special equipment); Rental services (excluding licensed rental services); Mechanical equipment leasing; Sales of lubricating oil; Sales of building decoration materials; Sales of metal fittings for construction; Construction of earthwork engineering; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Standardized services; Information consulting services (excluding licensed information consulting services); Manufacturing of construction machinery; Import and export of goods; Technology import and export; Sales of new energy vehicles as a whole; Automobile sales; Motor vehicle repair and maintenance; Road freight transportation of ordinary freight vehicles with a total weig