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What is the treatment principle of sunken ship salvage underwater engineering? The basic principle of underwater engineering is chemical grouting. Chemical grouting is to inject the pressure polymer m

Dredging is an underwater earthwork excavation project that uses manpower or machinery to dredge, expand or excavate deep rivers, lakes and other waters. For a long time, channel dredging has been an

Wind power hoisting is a very important task, especially in offshore wind power hoisting, we must do a good job in all aspects of protection. For wind power hoisting, we generally need to pay attentio