Natural Gas Services Group, Inc. provides small to medium horsepower compression equipment to the natural gas industry in the United States. The company rents small to medium horsepower compression equipment to non-conventional gas and oil production businesses, which include coal bed methane, gas shale, tight gas, and oil shales. As of December 31, 2014, it had 2,879 natural gas compressors in its rental fleet totaling 401,361 horsepower. The company is also involved in compressor fabrication activities that assembles compressor components into compressor units for rental or sale; and engineer and fabricate natural gas compressors, as well as designs and manufactures reciprocating compressor frames, cylinders, and parts. In addition, it designs, fabricates, sells, installs, and services flare stacks, and related ignition and control devices for the onshore and offshore incineration of gas compounds, such as hydrogen sulfide, carbon dioxide, natural gas, and liquefied petroleum gases; and provides customer support for its compressor and flare businesses. Further, the company offers exchange and rebuild program for screw compressors; maintains an inventory of new and used compressors; and services and maintains compressors. Natural Gas Services Group, Inc. was founded in 1998 and is headquartered in Midland, Texas.