Natural Gas Services Group, Inc. is a provider of small to medium horsepower compression equipment to the natural gas industry. The Company focuses primarily on the non-conventional natural gas and oil production business in the United States, such as coal bed methane, gas shale, tight gas and oil shales. The Company manufactures, fabricates and rents natural gases compressors that enhance the production of natural gas wells and provides maintenance services for its natural gas compressors. In addition, it sells custom fabricated natural gas compressors to meet customer specifications dictated by well pressures, production characteristics and particular applications. It also manufactures and sells flare systems for oil and gas plant and production facilities. The Company's operating units include Gas Compressor Rental, Engineered Equipment Sales, Service and Maintenance, and Corporate.