Group 1 - The State Intellectual Property Office of China has granted a patent for a "rapid cooling oil system and method for an ethylene cracking device" to China Petroleum & Chemical Corporation, Sinopec Shanghai Engineering Company, and Sinopec Refining Engineering Group Co., Ltd. The patent authorization announcement number is CN115716771B, with an application date of August 2021 [1] - China Petroleum & Chemical Corporation, established in 2000 and located in Beijing, primarily engages in oil and gas extraction. The company has a registered capital of 12,173,968.9893 thousand RMB and has invested in 268 enterprises, participated in 5,000 bidding projects, and holds 5,000 patent records [1] - Sinopec Shanghai Engineering Company, founded in 1993 and based in Shanghai, focuses on wholesale activities. The company has a registered capital of 50,000 thousand RMB, has invested in 11 enterprises, participated in 5,000 bidding projects, and holds 848 patent records [1] - Sinopec Refining Engineering Group Co., Ltd., established in 2007 and located in Beijing, primarily operates in water management. The company has a registered capital of 441,854.35 thousand RMB, has invested in 12 enterprises, participated in 69 bidding projects, and holds 5,000 patent records [2]