General Projects: Import and export of goods; Technology import and export; General parts manufacturing; General equipment manufacturing( Excluding special equipment manufacturing); Mechanical parts、 Parts processing; Manufacturing of metal chains and other metal products; General mechanical equipment installation services; Mechanical parts、 Parts Sales; Machinery and equipment rental; electronic、 Mechanical equipment maintenance( Excluding special equipment); Machinery and equipment sales; New energy prime mover equipment sales; Construction machinery sales; Construction machinery and equipment rental; Mining machinery sales; Metal structure sales; Sales of steel bars for construction; Photovoltaic power generation equipment leasing; Sales of photovoltaic equipment and components; Solar power generation technology services; Ship Sales; Metal product sales; Sales of metal chains and other metal products; Metal product repair; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Ship towing services; Fishery machinery manufacturing; Fishing machinery services; Fishing machinery sales; Manufacturing of equipment for marine aquaculture and utilization of marine biological resources; Sales of marine aquaculture and marine biological resource utilization equipment; Marine engineering equipment manufacturing;Marine engineering equipment sales; Offshore engineering design and module design and manufacturing services; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery; Agriculture、 Forest、 Mu、 vice、 Sales of specialized fishing machinery; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Fishery professions and auxiliary activities; Sales of underwater systems and operating equipment; Marine Services; navigation、 Surveying and Mapping、 Manufacturing of meteorological and oceanographic instruments; navigation、 Surveying and Mapping、 Sales of meteorological and oceanographic instruments; Digital video surveillance system manufacturing; Digital video surveillance system sales; Security system monitoring services; Software Development; Recreational and sports boat manufacturing; Recreational and Sport Boat Sales; Ship leasing; Mechanical equipment research and development; Domestic freight forwarding; loading and unloading; Mechanical and electrical equipment manufacturing; Metallurgical special equipment manufacturing; Sales of metallurgical equipment; Information system operation and maintenance services; Metal structure manufacturing; oven、 Furnace and electric furnace manufacturing; oven、 Furnace and electric furnace sales; Deep-sea oil drilling equipment manufacturing; Deep-sea oil drilling equipment sales; Fire protection technical services; Non-residential real estate rentals; Metal cutting and welding equipment manufacturing; Metal cutting and welding equipment sales; Special equipment manufacturing( Excluding licensed professional equipment manufacturing);Metal material manufacturing; Metal material sales; Manufacturing of special equipment for electrical machinery; Residential water and electricity installation and maintenance services; Information system integration services; Special equipment repair; Casting machinery manufacturing; Casting machinery sales; Metal processing machinery manufacturing; Metal cutting services; Mechanical and electrical equipment sales; Steel rolling processing; Security equipment manufacturing。( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license) Licensed Projects: Ship modification; Shipbuilding; Ship Design; Ship repair; Aquaculture; Construction project construction; Road freight transport( Does not contain dangerous goods); Installation, modification and repair of special equipment; Installation of civil air defense protection equipment; Building demolition work( Except blasting operations)。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business projects are subject to the approval documents or licenses of relevant departments.)