Group 1 - The State Intellectual Property Office of China has granted a patent to China Petroleum & Chemical Corporation (Sinopec) and Sinopec (Dalian) Petroleum and Chemical Research Institute for a method, system, equipment, and storage medium for measuring rust on tank tops, with the patent announcement number CN115619703B and application date of July 2021 [1] - China Petroleum & Chemical Corporation, established in 2000 and located in Beijing, primarily engages in oil and gas extraction, with a registered capital of 12,173,968.9893 thousand RMB [1] - The company has invested in 263 enterprises, participated in 5,000 bidding projects, holds 45 trademark registrations, and possesses 5,000 patent records, along with 40 administrative licenses [1] Group 2 - Sinopec (Dalian) Petroleum and Chemical Research Institute, founded in 2022 and based in Dalian, focuses on research and experimental development, with a registered capital of 338,459.08 thousand RMB [1] - The institute has invested in 1 enterprise, participated in 1,173 bidding projects, holds 4,658 patent records, and has 58 administrative licenses [1]