Group 1 - China Petroleum & Chemical Corporation (Sinopec) has applied for a patent for a "Sample Particle Dispersion System, Method, and Laser Particle Size Analyzer Equipment" with publication number CN119901561A, filed on October 2023 [1] - The patent aims to provide a system that includes a dispersion unit, recovery unit, and conveying unit, which allows for the recycling of dispersing agents, reducing consumption and waste treatment costs while ensuring the accuracy of laser particle size analysis [1] Group 2 - China Petroleum & Chemical Corporation was established in 2000, located in Beijing, primarily engaged in the petroleum, coal, and other fuel processing industries, with a registered capital of approximately 12.17 billion RMB [2] - Sinopec has invested in 257 companies, participated in 5,000 bidding projects, and holds 45 trademark records and 5,000 patent records [2] - Sinopec Catalyst Co., Ltd. was established in 2013, also located in Beijing, focusing on the manufacturing of chemical raw materials and products, with a registered capital of 150 million RMB [2] - Sinopec Catalyst has invested in 12 companies, participated in 2,112 bidding projects, and holds 818 patent records [2]