Applying pressure is Archrock's (formerly Exterran Holdings) forte -- the company rents and repairs compressors and performs natural gas compression services for oil and gas companies. It's two businesses are contract operations, and aftermarket services. The company serves customers in the US or customers that own compression equipment in the US. The firm's aftermarket services support the surface production and processing needs of customers. Archrock is a 31% owner of Archrock Partners, which contracts compressor units in the US. In 2015 it spun off its international services and global fabrication business as Exterran Corporation.