Group 1 - The State Intellectual Property Office of China shows that China Petroleum & Chemical Corporation (Sinopec) and Sinopec Shanghai Petrochemical Company Limited have applied for a patent titled "A Carbon Fiber Modified Sizing Agent and Its Preparation Method and Application," with publication number CN121270863A and application date of July 2024 [1] - The patent summary reveals a method for preparing a carbon fiber modified sizing agent, which includes reacting 5-norbornene-2-methylamine with a monofunctional epoxy resin to obtain a slurry, then dissolving the slurry in an organic solvent to configure the modified sizing agent. This method significantly enhances the interfacial bonding strength between carbon fiber and poly-dicyclopentadiene [1] Group 2 - China Petroleum & Chemical Corporation was established in 2000 and is based in Beijing, primarily engaged in oil and gas extraction. The company has a registered capital of 12,173,968.9893 million RMB. It has invested in 267 enterprises, participated in 5,000 bidding projects, and holds 45 trademark records and 5,000 patent records, along with 41 administrative licenses [1] - Sinopec Shanghai Petrochemical Company Limited was founded in 1993 and is located in Shanghai, focusing on the petroleum, coal, and other fuel processing industries. The company has a registered capital of 1,054,261.75 million RMB. It has invested in 21 enterprises, participated in 5,000 bidding projects, and holds 51 trademark records and 1,352 patent records, along with 12,791 administrative licenses [2]