Tri-Tech Holding, Inc. engages in the provision of consulting, engineering, procurement, construction, and technical services. It operates through the Water, Wastewater Treatment, and Municipal Infrastructure; and Industrial Pollution Control and Safety segments. The Water, Wastewater Treatment, and Municipal Infrastructure segment focuses on the municipal water supply and distribution, wastewater treatment, and gray water recycling, through the procurement and construction of proprietary build-transfer processing equipment and processing control systems. The Industrial Pollution Control and Safety segment comprises of zero liquid discharge, multi-effect evaporation, multi-flash evaporation, as well as emissions control, it also focuses on industrial water, wastewater treatment, and seawater desalination for industrial production and pollution control in the petroleum and power industries. The company was founded by Warren Zhou and and Yun Xiang Fan in 2002 and is headquartered in Beijing, China.