Licensed Projects: Special equipment manufacturing, Installation, modification and repair of special equipment, Electrical installation services, tourism business( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business items are subject to the approval results.) General Projects: Marine engineering equipment manufacturing, Offshore engineering platform equipment manufacturing, Shipbuilding, Ship repair, Construction machinery manufacturing, General equipment manufacturing( Excluding special equipment manufacturing), General equipment repair, Metal structure manufacturing, Machinery and equipment rental, General mechanical equipment installation services, Import and export of goods, Technology import and export, Industrial Engineering Design Services, Manufacturing of equipment for marine aquaculture and utilization of marine biological resources, Sales of marine aquaculture and marine biological resource utilization equipment( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)