Business scope includes: Permitted items: Port operation; Domestic ship management business; The ship is dismantled; Bonded logistics center operation; Kitchen waste disposal; Construction supervision of water conservancy projects; Hydraulic engineering quality inspection; Offshore trade operation (projects subject to approval according to law, business activities can only be carried out after approval by relevant departments, the specific business projects shall be subject to the approval results) General projects: Marine supporting equipment manufacturing; Shipbuilding; Ship modification; Ship repair; Ship sales; Port tally; Material handling equipment sales; Smart material handling equipment sales; Material handling equipment manufacturing; International ship management services; Ship port services; Domestic waste treatment equipment manufacturing; Ship design; Ship towing service; Domestic shipping agency; Professional cleaning, cleaning, disinfection services; Sales of petroleum products (without hazardous chemicals); Water transport equipment spare parts sales; Metal shipbuilding; Domestic trade agency; Trade brokerage; Industrial engineering design services; Project management services; Ship leasing; Sales of Marine engineering equipment; Marine engineering equipment manufacturing; Paint sales (without hazardous chemicals); Salvage services; Water pollution control; Recycling of renewable resources (except production scrap metal); Sales of renewable resources; Productive waste metal recycling; Auto parts wholesale; Auto parts retail; Environmental advisory services; Human resource services (excluding job intermediary activities and labor dispatch services); Labor service (excluding labor dispatch); Import and export of goods; Technology import and export