GOETTINGEN, Germany/Bohemia & NEW YORK--(BUSINESS WIRE)--Dr. Yujing Yang recently assumed the position of Director of Purification Technologies, North America. He brings broad experience in all areas of biopharmaceutical downstream processing and in-depth knowledge of biotech-related technologies, such as Xflow filtration and membrane chromatography, to Sartorius Stedim Biotech (Paris:DIM). In his current position, Dr. Yang reports to Dr. Uwe Gottschalk, Vice President of Marketing, Purification Technologies. Dr. Yang obtained both his Bachelor’s and Master’s degrees in Engineering from Tsinghua University in Beijing, China, and earned his Ph.D. in Environmental Biology at the University of Massachusetts in Boston, where he conducted research on cloning and won a number of awards.