Mr. Zhigang Du is our director and has served as our chief operating officer since 2014. Prior to joining us, Mr. Du served as Vice President in charge of operations at Hytera Communications Corporation Limited from 2012 to 2014. From 2009 to 2012, Mr. Du worked as an independent consultant providing management consulting services. Prior to that, Mr. Du worked at Huawei from 1997 to 2009, where he served as Assistant President of East Africa Region, Director of Technical Service of China Region, and Deputy Director of Testing Department. Mr. Du served as Environmental Engineer and Project Manager at Lanzhou Coal Mining Design and Research Institute from 1988 to 1994. Mr. Du received his bachelor’s degree of meteorology and his master’s degree of business administration from Lanzhou University in China.