About Natural Gas Services Group, Inc. Headquartered in Midland, TX, Natural Gas Services Group (NGS) maintains a growing rental fleet of high quality rotary screw and reciprocating wellhead compressors in the 50-500 horsepower range. At the end of 2011 the rental fleet totaled 2120 compressor units…the largest rental compressor fleet in the U.S. dedicated to the small-medium horsepower, wellhead market and the third largest overall. Repair and maintenance services for rental fleet units is provided through a network of district offices in Midland, Bridgeport and Godley, TX, Farmington, NM, Vernal, UT, Tulsa, OK, and Lewiston, MI, including the Appalachian and South Texas areas. Rental compressor fabrication facilities are located in Midland, TX. NGS designs, fabricates and sells custom engineered rotary screw and reciprocating compressor packages through our Engineered Products line in Tulsa, OK. This custom equipment ranges up to 2,500 horsepower per unit and can be natural gas engine or electric motor driven. NGS also designs, manufactures and fabricates a proprietary reciprocating compressor product line. The CiP (Cylinders in Plane) reciprocating compressor is a unique and efficient, small horsepower design that is utilized in our rental fleet and sold to compressor packagers, distributors and end-users throughout North America. Additionally, the Company designs, fabricates, sells, installs and services technologically advanced and patented industrial flare and ignition systems through our Flare King product line for use in onshore and offshore oil and natural gas production facilities. NGS is a public company listed on the New York Stock Exchange (NYSE:NGS). Headquarters 508 West Wall Street,  Suite 550 Midland, Texas 79701 (432) 262-2700 (432) 262-2701 fax www.ngsgi.com Michigan 3690 CR 491 Lewiston, Michigan 49756 (989) 786-3788 (989) 786-5182 fax New Mexico 3900 N. 1 st Bloomfield, New Mexico 87413 (505) 632-4566 (505) 632-1364 fax Texas Bldg 107 PR 1420 Bridgeport, Texas 76426 (940) 683-5322 (940) 683-5113 fax 4721 N. Hwy 171 Cleburne, Texas 76033 (817) 645-5559 (817) 645-6809 fax Oklahoma 575 Bird Creek Avenue Catoosa, Oklahoma 74015 (918) 266-3330 (918) 971-1818 fax Utah 1380 South 1300 East Naples, Utah 84078 (432)-262-2700 West Texas 12301 W. CR 125 Odessa, Texas 79765 (432) 262-2700 (432) 561-5480 fax