Robert Yu Lang Mao joined the Energy Recovery Inc board of directors in September 2010 and was appointed Interim President and Chief Executive Officer in November 2019. He brings to Energy Recovery extensive experience in helping equipment manufacturers successfully expand into new product and geographic markets. His strong strategic and analytic skills will help guide the diversification of ERI’s product line and its growth into new global markets. Mr. Mao served as chief executive officer of 3Com Corporation from 2008 – 2010 and was on that company’s board of directors from 2007 to 2010. Prior to 3Com Corporation, Mr. Mao worked for Nortel Networks as CEO of the company's Greater China operations from 1997 to 2006. Before joining Nortel, Mr. Mao was regional president of the Greater China region for Alcatel-Lucent from 1995-1997. Mr. Mao also held executive positions at Alcatel and ITT in Asia and the United States. Mr. Mao has served on the board of directors of companies listed on the NASDAQ, the Hong Kong Stock Exchange, and the Taiwan Stock Exchange. He is currently a member of the board of directors of Taiwan-based Yulon-Nissan Motor Company. He also serves as chairman of the board of directors of Ubee Interactive Corporation, a supplier of broadband access equipment and devises to multimedia and telecom service providers worldwide, and Pyroswift Holdings, Ltd., a supplier of high intensity LED lighting module and equipment. Both Ubee and Pyroswift are private companies. Mr. Mao is a graduate of Cornell University with a bachelor's degree in Materials Science and a master's degree in Metallurgical Engineering. He also holds a master's degree in Management from the Massachusetts Institute of Technology.