Liu Guojun, male, born in May 2000 1972, graduated from Qingdao Institute of Chemical Technology (now Qingdao University of Science and Technology) with a master's degree in engineering. In July, 2003, he graduated from Sun Yat-sen University, majoring in polymer chemistry and physics, and received a doctor of science degree. From July 2003 to July 2005, he was a postdoctoral fellow at the School of Materials Science and Engineering, South China University of Technology. Engaged in polymer materials research, published 6 academic papers and applied for 5 national invention patents. Among them, polyacrylate thickener for textile printing and dyeing prepared by inverse emulsion polymerization and polyacrylate/nano-silica composite pressure-sensitive adhesive emulsion prepared by in-situ emulsion polymerization have been put into production in different companies. He is currently an associate professor at dalian polytechnic university Institute of Chemical Engineering and Materials.