Craft Labs - Ft. Wayne - Chemicals
Chem-Spray - Denver - Chemicals
Delco - Ft. Worth - Parts, equipment
Valley Industries - Paynesville, MN - Parts, equipment
Great Lakes Dist. - Lansing, IL - Parts (Hotsy)
Armstrong Hyd - Carmi, IL - Parts, (Wheatley)
RSC - Equipment rental, lifts, etc.
Many local vendors for fittings, hoses, equipment repairs, etc.
Mettam Safety - Danville, IL - safety equipment, gloves, etc.
Gilmour Group - Pittsburgh, PA - Sprayers
All I can think of a the moment.
Dave Olson