Mr. Cheng Xinguo is the Vice General Manager, Ph.D., and Senior Engineer of our company. Participated in the drafting of more than ten national and petrochemical industry testing method standards; Hosted and participated in dozens of scientific and technological innovation projects of China National Petroleum Corporation and China Petroleum Lubricants Corporation, and multiple research achievements have won the China Petroleum and Lubricants Corporation Science and Technology Progress Award. He is a doctoral supervisor at Shanghai Jiao Tong University and a part-time professor at Beijing Jiao Tong University and Lanzhou Petrochemical Vocational and Technical College. Editorial board member of "Petrochemical Technology and Applications" and "Lubricants" magazines. I have published over 50 papers in academic journals and conferences both domestically and internationally, of which nearly 20 have been included in SCI journals. Formerly served as the Director of the Analysis Center and the Director of the Lubricant Research Institute at the Lanzhou Lubricant Research and Development Center of PetroChina, and was awarded the title of First Class Technical Expert by PetroChina Lubricants Company.