Group 1 - China Petroleum & Chemical Corporation (Sinopec) has applied for a patent related to a method and device for determining the average diameter of bubbles in epoxy resin wastewater [1] - The patent application was published under CN120293065A with an application date of January 2024 [1] - The method involves calculating various parameters such as Froude number, Morton number, Reynolds number, and Weber number to determine the average diameter of bubble clusters in the reactor [1] Group 2 - Sinopec was established in 2000 and is primarily engaged in oil and gas extraction, with a registered capital of approximately 12.17 billion RMB [2] - The company has invested in 263 enterprises and participated in 5,000 bidding projects, holding 45 trademark records and 5,000 patent records [2] - Nanjing Anlig Company, founded in 2018, focuses on research and experimental development, with a registered capital of 9.115 million RMB [2] - Nanjing Anlig has invested in 6 enterprises and participated in 9 bidding projects, holding 89 trademark records and 585 patent records [2]