Lifang Guo, PhD of Pulp and Papermaking Engineering Since 2013, Dr. Guo has joined Nantian Nongke, and committed to serval products research and development, including fatty alcohol defoamer agents, polyether defoamer agents, etc. Since 2017, she has been a visiting researcher in KTH Royal Institute of Technology (Sweden) for one year. She has published several scientific papers, and has taken part in several projects about new technology applications in pulping and papermaking, such as study of the applications of agricultural and forestry residues in pulping and papermaking, the applications of bio-enzymes in pulping and papermaking, research of fiber filter materials technology and applications, research of nano-cellulose modification and its applications. At present, she is devoting to creative pulping and papermaking chemical products research and development.