Datang Environment Industry Group Co., Ltd. provides environmental protection and energy conservation solutions to coal-fired power generation enterprises in the People's Republic of China. It operates through four segments: Environmental Protection and Energy Conservation Solutions, Renewable Energy Engineering, Thermal Power Engineering, and Other Businesses. The company offers flue gas desulfurization and denitrification concession operations, engineering services for coal-fired power plants, water treatment, and energy conservation services. It also provides engineering general contracting for wind, biomass, and photovoltaic power plants, as well as engineering, procurement, and construction services for thermal power plants. Incorporated in 2011 and headquartered in Beijing, it is a subsidiary of China Datang Corporation Ltd.