Mr. Josh Sheng Chen is one of our co-founders and has served as the chairman of our board of directors and our chief executive officer since our inception. Mr. Chen provides vision, overall management, and strategic decision-making relating to marketing, investment planning, and corporate development. Mr. Chen has more than 20 years' experience in the Internet infrastructure industry in China. In 1999, Mr. Chen founded our business and started the first carrier-neutral data center in China. In 1989, Mr. Chen founded Beijing Taixing Data Engineering Company Limited and in 1991, founded A-1 Netcom Inc., one of the pioneers in the ISP industry in China. Mr. Chen received his bachelor's degree in electrical engineering from Tsinghua University in 1991. Mr. Chen is a member of the Tsinghua Entrepreneur & Executive Club, a managing director of the Internet Society of China.

Mr. Shang-Wen Hsiao has served as our President and chief financial officer since June 2010. Previously, Mr. Hsiao served as the chief financial officer of Greatdreams (China), Inc. from June 2008 to June 2010. Prior to that, Mr. Hsiao served as the chief financial officer of Memsic Inc. (NASDAQ: MEMS) from July 2007 to June 2008. Mr. Hsiao is currently an independent director of Camelot Information Systems Inc. (NYSE: CIS), a leading provider of enterprise application services and financial industry IT services in China listed on the New York Stock Exchange. Mr. Hsiao also served as the chief executive officer and chief financial officer of Centuryfone 121 Networking and Communication Co. from September 2003 to May 2007. From July 2000 to September 2003, Mr. Hsiao served as the chief financial officer of YesKey Group. From January 1994 to July 2000, Mr. Hsiao was a senior manager of business, tax and legal advisory for Arthur Andersen LLP in Philadelphia and Shanghai. Mr. Hsiao received his Juris Doctor degree from Rutgers School of Law in 1994 and his bachelor's degree in finance and accounting from Temple University in 1989. Mr. Hsiao has been a certified public accountant since 1989 and was admitted to the Pennsylvania Bar in 1994.

Mr. Jun Zhang is one of our co-founders and has served as our chief operating officer since June 1999 and director since October 2012. From 1996 to 1999, Mr. Zhang served as vice president of Cenpok Inc., which sold its core operating assets to A-1 Netcom China Inc. in 1999. Mr. Zhang received his bachelor's degree in environmental engineering from Tsinghua University.

Mr. Philip Lin has served as our executive vice president of strategy & business development since April 2011. Prior to joining us, Mr. Lin held executive positions at various Internet and telecom related companies operating in China and the United States. Mr. Lin also served as an executive at Kluge & Company, where he invested in telecom and Internet related private equity deals on behalf of John Kluge and Metromedia Company. Mr. Lin received an undergraduate degree from Cornell University and a MBA from Columbia University.

Mr. Xiao has served in various roles since joining us in 1996 as a sales manager. From May 1998 to December 2002, Mr. Xiao was the senior manager of the marketing department; from January 2003 to December 2005, Mr. Xiao was a director of sales; from January 2006 to December 2007, Mr. Xiao was the deputy general manager of our company; from January 2008 to December 2008, Mr. Xiao was the general manager of North China Region and vice president. Prior to joining us, Mr. Xiao was a planning manager of HeDe Group Company. Mr. Xiao graduated from Capital University of Economics and Business in 1995, and received his master degree of business administration at China Europe International Business School in 2011.

Mr. Ningning Lai has served as our vice president of network services since October 2007. Mr. Lai joined us as a network engineer in March 2000 and has served in many roles. From April 2001 to September 2004, Mr. Lai was the manager of the network operation department; from October 2004 to June 2005, Mr. Lai was a senior business development manager for our network business; from July 2005 to July 2006, Mr. Lai was the senior manager of technical support center and was later promoted to be the director of technical support center from August 2006 to September 2007. Prior to joining us, Mr. Lai worked for Capital Information Development Company Limited from July 1999 to February 2000. Mr. Lai received his bachelor's degree in computer science from Beijing Union University.