Tri-Tech Holding, Inc. announced the appointment of Mr. Gavin Cheng as Joint Chief Executive Officer. Mr. Gavin Cheng, 49, has served as the Co-President of Tri-Tech since 2010. Mr. Cheng founded Beijing Satellite Science & Technology Co. in 1994 and served as its president until Tri-Tech acquired BSST in 2010. Mr. Cheng worked in research and development and project management at Beijing Test & Control Technology Institute of the Aeronautics Ministry from 1987 to 1993.