Group 1 - The core point of the article is that China National Petroleum Corporation (CNPC) has obtained a patent for a device and system related to "circulation coupling separator, oil-water separation, and liquid-solid separation" with the announcement number CN117682610B, applied for on November 2023 [1] - CNPC was established in 1999 and is headquartered in Beijing, primarily engaged in oil and natural gas extraction [1] - The registered capital of CNPC is 18,302,097,000 RMB [1] Group 2 - According to data analysis from Tianyancha, CNPC has invested in 1,297 companies and participated in 443 bidding projects [1] - The company holds 38 trademark registrations and has 5,000 patent records [1] - CNPC also possesses 168 administrative licenses [1]