Group 1 - China Petroleum & Chemical Corporation (Sinopec) has applied for a patent titled "Key Information Extraction Model Training Method and Related Products for Set Patterns," with publication number CN120071375A and application date of February 2025 [1] - The patent application describes a method for training a key information extraction model based on documents containing set patterns, which includes converting documents into images, extracting pattern location and category information, and associating this with textual information to create a training dataset [1] Group 2 - China Petroleum & Chemical Corporation was established in 2000, located in Beijing, and primarily engages in the petroleum, coal, and other fuel processing industries, with a registered capital of approximately 12.17 billion RMB [2] - Sinopec has invested in 254 companies, participated in 5,000 bidding projects, and holds 45 trademark records and 5,000 patent records, along with 39 administrative licenses [2] - Sinopec's partner, Sinopec Yinkai Information Technology Co., Ltd., was founded in 2002, also in Beijing, focusing on the accommodation industry, with a registered capital of 500 million RMB [2] - Sinopec Yinkai has invested in 8 companies, participated in 2,070 bidding projects, and holds 113 trademark records and 440 patent records, along with 14 administrative licenses [2]