Business scope includes: Licensed projects: All kinds of engineering construction activities; Construction project design; Port operation; Technology import and export; Import and export of goods; Import and export agent; Special equipment installation, renovation and repair; Domestic ship management business (for projects subject to approval according to law, business activities can only be carried out after approval by relevant departments, and the specific business projects shall be subject to the approval results). General items: Ship repair; Daily product repair; General equipment repair; Special equipment repair; Electrical equipment repair; Electronic and mechanical equipment maintenance (excluding special equipment); Ship sales; Sales of Marine engineering equipment; Special equipment sales; Machinery and equipment sales; Sales of electrical and mechanical equipment; Pipeline transportation equipment sales; Water transport equipment sales; Water transport equipment spare parts sales; Electrical equipment sales; Smart port handling equipment sales; Lubricating oil sales; Sales of special chemical products (without hazardous chemicals); Paint sales (without hazardous chemicals); Hardware products wholesale; Project management services; Domestic shipping agency; International shipping agency; Ship leasing; International ship management services; Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination; Information technology consulting services; Information consulting services (excluding licensed information consulting services); Domestic cargo transport agents (except for items subject to approval according to law, independently carry out business activities according to law with business licenses).