Warren Equipment Company is a holding company that operates through several subsidiaries, including Compressor Systems, Ignition Systems and Controls, North American Power Systems, Pump Systems International, Rotary Compressor Systems and Warren CAT. Compressor Systems is a manufacturer of compression equipment. Ignition Systems and Controls provides industrial ignition equipment, engine starters, and related products and services. North American Power Systems manufacturers and distributes products to the industrial, residential and light commercial markets. Its products include engines, generators and parts. Pump Systems International fabricates and markets engine-driven water and crude oil pumps to energy companies. Rotary Compressor Systems provides rotary screw compression technology to the natural gas market. Warren CAT is a distributor of loaders, engines, power systems and work tools manufactured under the Caterpillar brand name. Warren Company s subsidiaries operate throughout more than 10 states and employ more than 1,400 people. Warren Equipment is headquartered in Midland, Texas.