Steiner Electric Company
- Distributor of electrical supplies, automation products and motor repair service. Corporate headquarters in Elk Grove Village with distribution centers in South Holland, Rockford, Saint Charles, Gurnee, and Chicago.
- http://www.stnr.com/

Decatur Industrial Electric
- Statewide distributor of industrial electronic components including motors, fuses, and transformers, plus provides electromechanical device repair work. Site includes company background, product and services description, and locations in Bradley, Mt. Ver
- http://www.elect-mech.com/