Group 1 - The State Intellectual Property Office has granted a patent for a "lifting ear structure for lifting thin-walled round pipe tower modules" to Sinopec Heavy Lifting Transportation Engineering Co., Ltd. and Sinopec Refining Engineering Group Co., Ltd. [1] - Sinopec Heavy Lifting Transportation Engineering Co., Ltd. was established in 2014, located in Beijing, with a registered capital of 500 million RMB, and has participated in 301 bidding projects and holds 96 patents [1]. - Sinopec Refining Engineering Group Co., Ltd. was established in 2007, also located in Beijing, with a registered capital of approximately 4.42 billion RMB, has invested in 12 companies, participated in 63 bidding projects, and holds 5,000 patents [1].