Group 1 - The State Intellectual Property Office of China has granted a patent titled "A Composite Material for Shear Joints at the End of Blast-Resistant Walls" to China Petroleum & Chemical Corporation, Sinopec Shanghai Engineering Company, and Sinopec Refining Engineering Group Co., Ltd. The patent was applied for on October 2021 [1] - China Petroleum & Chemical Corporation, established in 2000, is primarily engaged in oil and gas extraction, with a registered capital of 12,173,968.9893 million RMB. The company has invested in 268 enterprises and participated in 5,000 bidding projects, holding 45 trademark records and 5,000 patent records [1] - Sinopec Shanghai Engineering Company, founded in 1993, focuses on wholesale activities with a registered capital of 50,000 million RMB. The company has invested in 11 enterprises and participated in 5,000 bidding projects, holding 4 trademark records and 848 patent records [1] - Sinopec Refining Engineering Group Co., Ltd., established in 2007, is primarily involved in water management with a registered capital of 441,854.35 million RMB. The company has invested in 12 enterprises and participated in 69 bidding projects, holding 5,000 patent records [2]