Group 1 - The State Intellectual Property Office of China granted a patent for a "Diffuser" to China Petroleum & Chemical Corporation, Sinopec Engineering Group Co., Ltd., and Sinopec Guangzhou Engineering Co., Ltd., with the announcement number CN115532174B and application date of August 2022 [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 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, holds 5,000 patent records, and has 4 administrative licenses [1] Group 2 - 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 4,216 bidding projects, holds 4 trademark records, 864 patent records, and has 21 administrative licenses [2]