Group 1: Deepwater Equipment Delivery - China National Offshore Oil Corporation (CNOOC) has delivered 24 sets of 2000-meter deepwater suction anchors to Brazil, marking it as one of the largest deepwater oil and gas equipment deliveries by China [1][3] - The suction anchors weigh approximately 2674 tons, with a maximum height of 21 meters and a diameter of 8 meters, presenting significant technical challenges in precision control and deformation management due to their large size and thin wall thickness of 25 millimeters [3] Group 2: Technological Innovations - The project team achieved a quality compliance rate exceeding 99.9% through innovative construction techniques, including horizontal extension and vertical assembly, as well as advanced technologies like 3D scanning and finite element simulation [5] - The suction anchors will be installed at the Mero oil field in the Santos Basin, located in southeastern Brazil [5] Group 3: Marine Research Vessel - The first ocean-class intelligent comprehensive scientific research vessel, "Tongji," has been delivered, designed and built independently by China, featuring a 2000-ton capacity and advanced green, quiet, and intelligent technologies [6][8] - "Tongji" measures 82 meters in length and 15 meters in width, capable of accommodating 15 crew members and 30 research team members, with an operational range of 8000 nautical miles [8] Group 4: Power Grid Development - The Xinjiang 750 kV ring network project is nearing completion after 15 years of construction, with a total line length of 4197 kilometers, making it the largest 750 kV ultra-high voltage transmission ring network in China [11][17] - The project will enhance the power grid coverage to approximately 1.06 million square kilometers, nearly one-ninth of China's land area, and will facilitate the integration of renewable energy resources in the Tarim Basin [11][17]