Core Points - The completion of the last sunken box installation at the COFCO oil and grain terminal project in Lianyungang marks the end of all "super hazardous major sub-items," laying a solid foundation for subsequent superstructure construction [1] - The project involves the installation of 30 sunken boxes, with the heaviest weighing up to 2,799 tons, utilizing high-pressure airbag lifting and precise measurement systems for centimeter-level accuracy [3] - The terminal being constructed is a 100,000-ton grain and oil terminal, occupying a planned coastline length of 531 meters, with an annual designed throughput of 5 million tons [7] Industry Impact - The completion of the sunken box installation allows the project to transition to the construction phase of the terminal's superstructure and supporting facilities, which will effectively meet the grain transportation needs of enterprises in the hinterland of Ganyu [7] - The project supports Lianyungang's goal of establishing an international hub port with a "one body and two wings" structure [7]