Exterran Holdings, Inc. is engaged in the full-service natural gas compression business. It provides operations, maintenance, service and equipment for oil and natural gas production, processing and transportation applications. It operates in three primary business lines: contract operations, fabrication and aftermarket services. In its contract operations business line, the Company owns a fleet of natural gas compression equipment, and crude oil and natural gas production and processing equipment that it utilizes to provide operations services to its customers. In its fabrication business line, it fabricates and sells equipment that is similar to the equipment that it owns and utilizes to provide contract operations to its customers. In its aftermarket services business line, it sells parts and components, and provides operations, maintenance, overhaul and reconfiguration services to customers who own compression, production, gas treating and oilfield power generation equipment.