Group 1 - The core point of the article is that China Petroleum & Chemical Corporation (Sinopec) has obtained a patent for a method, system, equipment, and storage medium for controlling low-concentration gas distribution, with the patent number CN115992936B and an application date of October 2021 [1] Group 2 - China Petroleum & Chemical Corporation was established in 2000 and is based in Beijing, primarily engaged in oil and gas extraction, with a registered capital of 121,739.6893 million RMB [1] - The company has invested in 267 enterprises, participated in 5,000 bidding projects, holds 45 trademark registrations, and has 5,000 patent records, along with 41 administrative licenses [1] Group 3 - Sinopec (Dalian) Petrochemical Research Institute Co., Ltd. was established in 2022 and is located in Dalian, focusing on research and experimental development, with a registered capital of 338.45908 million RMB [1] - The research institute has invested in 1 enterprise, participated in 2,796 bidding projects, holds 5,000 patent records, and has 65 administrative licenses [1]