Dr. Gang Yu is an executive director and co-chairman of the board of directors of Zall Group. Dr. Yu has extensive experience in E-commerce and operation and logistics management and has previous served in various positions at multi-national corporations such as Dell Inc. and Amazon.com. Dr. Yu obtained his bachelor degree in science from Wuhan University in 1982 and his master degree in science from Cornell University in 1985. Dr. Yu received his PhD from the Wharton School of Business, University of Pennsylvania in 1990.