Three 200KW water-cooled screw air compressors serve the Shangdu Henghui Thermal Power Project. Shangdu County Henghui Cogeneration Co., Ltd. urban cogeneration project with a total investment of 400 million yuan and the construction of a total installed capacity of 2 × 25,000 kilowatts of thermal power units, project approval, environmental assessment, land, planning procedures have been completed.