- Baum Sign
 - Aurora - Authorised sales, service, and installation contractor for Fair-Play scoreboards, serving northern Illinois. - Electronic Displays Inc.
- Addison - Manufacturer of LED and digital displays.
- Lake Side Roofing
- Addison
- Moving Message Signs
- Manufactures LED moving signs, scoreboards, message centres, reader boards, and synchronized clocks.
- Neon Design, Inc.
- Chicago - Manufactures, sells, and installs neon, cold cathode, and fibre optic lighting.
- Parvin-Clauss Sign Company
- Carol Stream - Manufactures and installs indoor and outdoor signs, scoreboards and video boards for many applications in the Chicago area.
- ScoreTronics
- Oak Brook - Manufacturer of portable remote-controlled scoreboards for baseball, football, basketball, football, and many other sport.
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