Road freight transportation (excluding dangerous goods); Shipbuilding; Ship repair; Ship inspection services; Ship design; Special equipment manufacturing; Special equipment installation, modification, and repair. General items: Manufacturing of metal chains and other metal products; Sales of metal chains and other metal products; Sales of metal products; Manufacturing of metal processing machinery; Manufacturing of general equipment (excluding special equipment); Manufacturing of general parts; Machining of mechanical parts and components; Sales of mechanical parts and components; Manufacturing of hardware products; Retail of hardware products; Sales of textiles and raw materials; Sales of metal materials; Road freight transportation of general goods with a total mass of 4.5 tons or less (excluding online freight and dangerous goods); Goods import and export; Technology import and export; Import and export agency; Production of industrial textiles; Sales of industrial textiles; Manufacturing of plastic products; Sales of plastic products; Manufacturing of ship automation, detection, and monitoring systems; Manufacturing of marine supporting equipment; Sales of water transport equipment parts; Ship towing services; Technical services, technology development, technical consultation, technology exchange, technology transfer, and technology promotion.