Business scope includes: General items: Ship sales; Professional repair of radar and radio navigation equipment; Electrical equipment repair; Water transport equipment spare parts sales; Sales of electronic components and electromechanical components; Mechanical and electrical equipment sales; Electrical equipment sales; Sales of bearings, gears and transmission components; Distribution switch control equipment sales; Instrument sales; Optical instrument sales; Pump and vacuum equipment sales; Fire equipment sales; Sales of diving rescue equipment; Hardware products retail; Sales of labor protection products; Cork products sales; Synthetic fiber sales; Metal structure sales; Sales of plastic products; Lubricating oil sales; Paint sales (without hazardous chemicals); Intelligent storage equipment sales; Security equipment sales; New energy power equipment sales; Sales agent; Manufacture of ship automation, inspection and monitoring system; Photovoltaic equipment and components manufacturing; Motor and its control system development; Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination; New material technology promotion services; Research and development of resource recycling technology; Research and development of electronic special materials; Import and export of goods; Technology import and export.