Group 1 - The core point of the article is that China National Petroleum Corporation (CNPC) has applied for a patent related to a method for identifying the types and origins of cycloalkane rubber oil components in thermoplastic elastomers, which aims to address challenges in distinguishing and analyzing rubber oil types and origins [1] Group 2 - The patent application, published as CN121522026A, was filed on August 2024 and falls within the field of rubber oil applications [1] - The method involves extracting and purifying the rubber oil, conducting gas chromatography to obtain a chromatogram, and comparing it with reference samples to determine the type and origin of the rubber oil [1] Group 3 - CNPC was established in 1999 and is headquartered in Beijing, primarily engaged in oil and natural gas extraction [1] - The company has a registered capital of 18,302,097 million RMB and has invested in 1,300 enterprises, participated in 443 bidding projects, and holds 5000 patent records [1]