Manufacture of agricultural machinery; sale of agricultural machinery; sale of horticultural products; manufacture of pneumatic and electric tools; sale of pneumatic and electric tools; manufacture of general equipment (excluding special equipment); sale of mechanical equipment; manufacture of lighting fixtures; sale of lighting fixtures; manufacture of metal tools; sale of metal tools; manufacture of batteries; sale of batteries; municipal facility management; urban greening management; landscaping construction; sale of high-speed rail equipment and parts; maintenance of transportation facilities; repair of general equipment; sale of railway rolling stock parts; manufacture of railway rolling stock parts; research and development of mechanical equipment; research and development of metal products; manufacture of hardware products; wholesale of hardware products; processing of mechanical parts and components; sale of mechanical parts and components; sale of instruments and meters; wholesale of stationery; sale of office equipment; sale of lubricants; sale of chemical products (excluding licensed hazardous chemicals); sale of shoe-making raw materials; wholesale of shoes and hats; sale of wood; manufacture of high-performance fibers and composites; sale of high-performance fibers and composites; sale of packaging materials and products; sale of fasteners; sale of Class II medical devices; technical services, technology development, consulting, exchange, transfer, and promotion; import and export of goods; import and export of technologies.