Group 1 - The State Intellectual Property Office of China shows that Sinopec has applied for a patent for a method of synthesizing tetraalkoxyethane, with publication number CN119841716A and application date in October 2023 [1] - The patent summary indicates that the method involves selective conversion of low-carbon alcohols and biomass materials in the presence of oxygen gas and catalysts to produce tetraalkoxyethane, highlighting its green and efficient process with broad application prospects [1] - Sinopec, established in 2000 and headquartered in Beijing, primarily engages in the petroleum, coal, and other fuel processing industries, with a registered capital of approximately 12.17 billion RMB [1] Group 2 - Sinopec (Shanghai) Petrochemical Research Institute Co., Ltd., founded in 2022 and located in Shanghai, focuses on technology promotion and application services, with a registered capital of 498 million RMB [2] - The research institute has made one external investment, participated in 83 bidding projects, and holds 384 patent records, along with 123 administrative licenses [2]