Group 1 - The State Intellectual Property Office of China has granted a patent for a "diffuser for upstream reactors and upstream reactors" to China Petroleum & Chemical Corporation, Sinopec Engineering Group Co., Ltd., and Sinopec Guangzhou Engineering Co., Ltd. The patent authorization announcement number is CN117264656B, with an application date of November 2023 [1][2][3] - China Petroleum & Chemical Corporation, established in 2000, is primarily engaged in oil and gas extraction, with a registered capital of 12,173,968.9893 thousand RMB. The company has invested in 263 enterprises and participated in 5,000 bidding projects, holding 45 trademark records and 5,000 patent records, along with 40 administrative licenses [1] - Sinopec Engineering Group Co., Ltd., founded in 2007, focuses on water management, with a registered capital of 441,854.35 thousand RMB. The company has invested in 12 enterprises, participated in 63 bidding projects, and holds 5,000 patent records, along with 4 administrative licenses [1] - Sinopec Guangzhou Engineering Co., Ltd., established in 1998, specializes in professional technical services, with a registered capital of 30,000 thousand RMB. The company has invested in 2 enterprises, participated in 4,206 bidding projects, and holds 4 trademark records and 864 patent records, along with 21 administrative licenses [2]