Our Member Companies are N C Machinery Co., NC The Cat Rental Store, N C Power Systems Co., Tractor & Equipment Co., T&E The Cat Rental Store, T&E Power Systems, and SITECH Northwest Inc, representing Caterpillar, and other manufacturers. Harnish Group Inc. is the Caterpillar Dealer in central and western Washington, central and eastern Montana, northwestern Wyoming, northwestern North Dakota and the state of Alaska.