Group 1 - The State Intellectual Property Office has granted a patent for a method and device for correcting torque imbalance in landing support rods to three companies: East China Electric Power Engineering Co., Ltd., Yangzhou Guodian General Electric Machinery Manufacturing Co., Ltd., and Maige Automation Technology (Shanghai) Co., Ltd. [1][2] - East China Electric Power Engineering Co., Ltd. was established in 1992, located in Shanghai, with a registered capital of 2,913.26029 million RMB. The company has participated in 1,704 bidding projects and holds 188 patents [1]. - Yangzhou Guodian General Electric Machinery Manufacturing Co., Ltd. was founded in 2000, located in Yangzhou, with a registered capital of 50.85 million RMB. The company has participated in 217 bidding projects and holds 123 patents [1]. - Maige Automation Technology (Shanghai) Co., Ltd. was established in 2017, located in Shanghai, with a registered capital of 6 million RMB. The company has participated in 9 bidding projects and holds 24 patents [2].