Business scope includes: General items: Technical service, technology development, technical consultation, technical exchange, technology transfer, technology promotion; Hardware products retail; Import and export agent; Rental of special equipment; Sales of mechanical parts and spare parts; Marine services; Manufacture of ship automation, inspection and monitoring system; Information consulting services (excluding licensed information consulting services); Technology import and export; Research and development of Marine engineering equipment; Import and export of goods; Sales of bearings, gears and transmission components; Electronic and mechanical equipment maintenance (excluding special equipment); General equipment manufacturing (excluding special equipment manufacturing); Marine equipment manufacturing; Marine engineering equipment manufacturing; Machinery and equipment leasing; Marine environmental services; Lubricating oil sales; Artificial intelligence hardware sales; Sales of labor protection products; International ship management services; Manufacture of special equipment for environmental protection; Sales of wire rope and its products; Construction machinery and equipment leasing; Electrical equipment sales; Environmental advisory services; Sales of special labor protection products; Sales of Marine engineering equipment; Machinery and equipment sales; Mechanical equipment research and development; Hardware product development; Hardware products wholesale; New energy power equipment sales; Ship port services; Smart port handling equipment sales. (Except for projects subject to approval according to law, independently carry out business activities according to law with business license) Permitted projects: Bonded logistics center operation; Ship repair; Port ship supply; Inspection services; Port operation.