Group 1 - The core point of the article highlights that China Petroleum & Chemical Corporation and Sinopec Shanghai Petrochemical Company have obtained a patent for a method to prevent corrosion in regeneration towers, with the patent number CN115990395B and application date in October 2021 [1] Group 2 - China Petroleum & Chemical Corporation, established in 2000 and based in Beijing, primarily engages in oil and gas extraction, with a registered capital of 12,173,968.9893 thousand RMB [1] - The company has invested in 269 enterprises, participated in 5,000 bidding projects, holds 45 trademark registrations, 5,000 patents, and possesses 41 administrative licenses [1] Group 3 - Sinopec Shanghai Petrochemical Company, founded in 1993 and located in Shanghai, focuses on the oil, coal, and other fuel processing industries, with a registered capital of 1,054,261.75 thousand RMB [1] - The company has invested in 21 enterprises, engaged in 5,000 bidding projects, holds 51 trademark registrations, 1,356 patents, and has 12,814 administrative licenses [1]