Special equipment manufacturing; highway management and maintenance; road motor vehicle production; various construction engineering activities; import and export of goods; import and export of technology. General items: urban rail transit equipment manufacturing; general equipment manufacturing (excluding special equipment manufacturing); casting machinery manufacturing; hydraulic power machinery and components manufacturing; special equipment manufacturing (excluding licensed professional equipment manufacturing); special operation robot manufacturing; intelligent basic manufacturing equipment manufacturing; industrial robot manufacturing; construction engineering machinery manufacturing; special machinery for building material production manufacturing; traffic safety and control special equipment manufacturing; security equipment manufacturing; agricultural machinery manufacturing; agricultural, forestry, animal husbandry, and fishery machinery parts manufacturing; special equipment for lighting appliance production manufacturing; special machinery for tunnel construction manufacturing; new car sales; automotive parts and accessories manufacturing; special equipment leasing; mechanical equipment leasing; transportation equipment leasing services; software development; computer software and hardware and auxiliary equipment wholesale; computer software and hardware and auxiliary equipment retail; motor vehicle modification services; installation and repair of agricultural, forestry, animal husbandry, and fishery specialized machinery; manufacturing of agricultural, forestry, animal husbandry, and fishery specialized machinery; sales of agricultural, forestry, animal husbandry, and fishery specialized machinery; motor vehicle repair and maintenance; traffic facility repair; electrical equipment sales; special equipment repair; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; landscaping engineering construction; electrical machinery and equipment sales; electrical signal equipment device sales; mechanical parts and components processing; automotive parts R&D; household textile finished product manufacturing; fabric textile processing; industrial textile finished product sales; daily-use department store sales; labor protection supplies production; labor protection supplies sales.