General equipment manufacturing (excluding special equipment manufacturing); shipbuilding; marine supporting equipment manufacturing; marine engineering equipment manufacturing; special equipment manufacturing (excluding licensed professional equipment manufacturing); ecological environment monitoring and detection instrument manufacturing; ecological environment monitoring and detection instrument sales; automotive parts and accessories manufacturing; metal ship manufacturing; non-metal ship manufacturing; marine engineering platform equipment manufacturing; marine engineering equipment sales; marine services; engineering management services; marine engineering equipment research and development; marine environment monitoring and detection equipment sales; marine environment monitoring and detection equipment manufacturing; underwater system and operation equipment manufacturing; diving and salvage equipment sales; diving and salvage equipment manufacturing; motor and its control system research and development; general equipment repair; ship repair; electrical equipment repair; special equipment repair; CNC machine tool sales; machine tool functional parts and accessories sales; mechanical equipment sales; intelligent control system integration; environmental monitoring special instrument sales; marine water quality and ecological environment monitoring instrument equipment sales; industrial automatic control system device sales; industrial automatic control system device manufacturing; special equipment sales; security equipment sales; electrical equipment sales; underwater system and operation equipment sales; information security equipment sales; recreational and sports boat sales; software development; data processing and storage support services; information system operation and maintenance services; information technology consulting services; software sales; ship design; fire-fighting equipment sales; security system monitoring services; intelligent unmanned aerial vehicle sales; communication equipment sales; big data services; computer system services; information system integration services; network and information security software development; data processing services; salvage services; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; archive sorting services; automotive parts research and development; environmental emergency technical equipment sales; industrial control computer and system manufacturing; engineering and technological research and experimental development; goods import and export; technology import and export. Licensed items: computer information system security special product sales; audio and video product production; road motor vehicle production.