Arizona Housing Association - Association of professionals in all segments of the manufactured homes industry. Consumer oriented with listings and buying guide. Arizona Builders' Zone - Directory of builders, contractors and home improvement companies plus resources and information on the local construction and real estate industry. Electric Supply - Independent distributor providing a broad spectrum of industrial electrical products. Offices in Phoenix and Tucson. Arizona Contractor Center - Exam preparation and license services for building and construction contractors. NKBA Arizona Chapter - The state chapter of the National Kitchen and Bath Association. Information on meetings, continuing education and officers. Whitton Concrete - Residential and commercial concrete contractor with depots in Mesa and Tucson. Includes company history and service area. Empire Southwest - Authorized Caterpillar dealer for heavy equipment and engines located on a 40-acre campus. Information includes training courses, schedules, news, parts and service and locations.