Business scope includes: General items: Mechanical electrical equipment sales; Sales of bearings, gears and transmission components; Electrical equipment sales; Valve and cock sales; Sales of special instruments for navigation, mapping, meteorology and ocean; Rubber products sales; Metal material sales; Ship port services; International shipping agency; Domestic shipping agency; Marine seafarers' affairs agency services; Agency service for inland waterway crew affairs; Port tally; Sales of electronic products; Daily necessities sales; Hardware products retail; Sales of labor protection products; Synthetic materials sales; Sales of wire rope and its products; Professional cleaning, cleaning, disinfection services; Import and export of goods; Technology import and export; Import and export agent