Group 1 - The core viewpoint of the news is that Sinopec has obtained a patent for a method and device for characterizing the pore size distribution of solid materials, which may enhance its research capabilities in the petrochemical sector [1] Group 2 - Sinopec, established in 2000, is primarily engaged in oil and gas extraction, with a registered capital of approximately 12.17 billion RMB [1] - Sinopec has invested in 263 companies and participated in 5,000 bidding projects, holding 45 trademark records and 5,000 patent records [1] - Sinopec (Dalian) Petrochemical Research Institute, founded in 2022, focuses on research and experimental development, with a registered capital of approximately 338.46 million RMB [1] - The Dalian Research Institute has invested in 1 company, participated in 1,172 bidding projects, and holds 4,658 patent records [1]