AROC vs NGS

Archrock Inc.

Archrock, Inc. operates as an energy infrastructure company in the United States. It operates in two segments, Contract Operations and Aftermarket Services. The company engages in the designing, sourcing, owning, installing, operating, servicing, repairing, and maintaining its owned fleet of natural gas compression equipment to provide natural gas compression services to customers in the oil and natural gas industry. It also offers various aftermarket services, such as sale of parts and components; and provision of operation, maintenance, overhaul, and reconfiguration services to customers who own compression equipment. The company was formerly known as Exterran Holdings, Inc. and changed its name to Archrock, Inc. in November 2015. Archrock, Inc. was founded in 1990 and is headquartered in Houston, Texas.

Natural Gas Services Group Inc.

Natural Gas Services Group, Inc. provides natural gas compression services and equipment to the energy industry in the United States. It fabricates, manufactures, rents, and sells natural gas compressors and related equipment. The company primarily engages in the rental of compression units that provide small, medium, and large horsepower applications for unconventional oil and natural gas production. As of December 31, 2020, the company had 2,224 natural gas compression units in its rental fleet with 438,524 horsepower. The company also engages in the design, fabrication, and assembly of compressor components into compressor units for rental or sale; engineers and fabricates natural gas compressors; and designs and manufactures a line of reciprocating compressor frames, cylinders, and parts. In addition, it is involved in the design, fabrication, sale, installation, and service of 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. Further, the company offers customer support services for its compressor and flare sales business; an exchange and rebuild program for small horsepower screw compressors; and maintains an inventory of new and used compressors. Its primary customers are exploration and production(E&P) companies that utilize compressor units for artificial lift applications; E&P companies that focuses on natural gas-weighted production; and midstream companies. Natural Gas Services Group, Inc. was incorporated in 1998 and is headquartered in Midland, Texas.