Our Member Companies are N C Machinery, N C The Cat Rental Store, N C Power Systems, Tractor & Equipment Co., T & E The Cat Rental Store, T&E Power Systems, 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.