Group 1 - The State Intellectual Property Office of China shows that CNOOC Engineering Co., Ltd. has applied for a patent titled "A Continuous Water Energy Recovery and Power Generation System for Offshore Platforms," with publication number CN121273514A and application date of October 2025 [1] - The patent abstract indicates that the invention provides a system for recovering and generating power from the kinetic and potential energy contained in the water discharged from offshore platforms, featuring a pipeline system that includes a main pipeline, an inflow pipe, and a bypass pipeline [1] - The system is designed to efficiently utilize the energy from the height difference between the platform and sea level while avoiding cavitation issues caused by excessive static pressure in the tailpipe, offering a reliable solution for energy recovery and utilization [1] Group 2 - CNOOC Engineering Co., Ltd. was established in 2000 and is located in Tianjin, primarily engaged in civil engineering and construction [2] - The company has a registered capital of 442,135.48 million RMB and has made investments in 7 enterprises, participated in 5,000 bidding projects, and holds 3,210 patent records [2] - Additionally, the company has 26 trademark records and 306 administrative licenses [2]