Manufacturing of mechanical and electrical equipment; manufacturing of furnaces, kilns, and electric furnaces; manufacturing of metal cutting and welding equipment; manufacturing of marine supporting equipment; manufacturing of ship automation, detection, and monitoring systems; manufacturing of general equipment (excluding special equipment); manufacturing of water transport equipment parts; manufacturing of virtual reality equipment; research and development of mechanical equipment; sales of electronic products; integration of intelligent control systems; technical services, technical development, technical consulting, technical exchange, technology transfer, technology promotion; road cargo transport for general freight vehicles with a total mass of 4.5 tons and below (excluding online freight and dangerous goods); manufacturing of integrated circuits; design of integrated circuits; manufacturing of integrated circuit chips and products; sales of integrated circuits; sales of integrated circuit chips and products; manufacturing of electronic components; manufacturing of semiconductor device specialized equipment; sales of semiconductor device specialized equipment; retail of electronic components; wholesale of electronic components; design services for integrated circuit chips; information system integration services; manufacturing of computer software, hardware, and peripheral equipment; manufacturing of industrial control computers and systems; sales of industrial control computers and systems; software development; development of artificial intelligence application software; computer system services; manufacturing of forgings and powder metallurgy products; sales of forgings and powder metallurgy products; research and development of new material technologies; sales of high-performance non-ferrous metals and alloy materials; research and development of electronic specialized materials; industrial design services; professional design services.