Group 1 - The State Intellectual Property Office of China granted a patent for a "micro gas measurement device in gold pipe thermal simulation experiments" to Daqing Oilfield Co., Ltd. and China National Petroleum Corporation, with the announcement number CN118518178B and application date of February 2023 [1] - Daqing Oilfield Co., Ltd., established in 2000 and located in Daqing City, focuses on oil and gas extraction, with a registered capital of 4,750 million RMB. The company has invested in 34 enterprises, participated in 5,000 bidding projects, holds 11 trademark records, 4,843 patent records, and possesses 7,409 administrative licenses [1] - China National Petroleum Corporation, founded in 1999 and based in Beijing, also specializes in oil and gas extraction, with a registered capital of 18,302.097 million RMB. The company has invested in 1,300 enterprises, participated in 443 bidding projects, holds 38 trademark records, 5,000 patent records, and has 168 administrative licenses [1]