Group 1 - The State Intellectual Property Office of China has published a patent application titled "Method and Device for Measuring the Acidity of Molecular Sieves" by China Petroleum & Chemical Corporation (Sinopec), Sinopec Nanjing Chemical Research Institute Co., Ltd., and Sinopec Group Nanjing Chemical Industry Co., Ltd. The application was filed on December 2023 [1] - The patent describes a method that involves adsorbing a test gas onto a molecular sieve sample, followed by temperature-programmed desorption to obtain optical intensity data during the desorption process. This data is used to characterize the acidity strength of the molecular sieve sample [1] Group 2 - China Petroleum & Chemical Corporation, established in 2000 and based in Beijing, primarily engages in oil and natural gas extraction. The company has a registered capital of approximately 12.17 billion RMB and has invested in 263 companies, participated in 5,000 bidding projects, and holds 5,000 patents [1] - Sinopec Nanjing Chemical Research Institute Co., Ltd., founded in 1994 and located in Nanjing, focuses on wholesale activities with a registered capital of 80 million RMB. The company has invested in 3 enterprises, participated in 461 bidding projects, and holds 1,649 patents [2] - Sinopec Group Nanjing Chemical Industry Co., Ltd., established in 1985 and also based in Nanjing, specializes in rubber and plastic products with a registered capital of approximately 2.4 billion RMB. The company has invested in 16 enterprises, participated in 5,000 bidding projects, and holds 569 patents [2]