| Business Name | Address | |
| Royal Electric & Alarm Inc | PO Box 388 River Grove, IL 60171 |
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| Ebony Contracting Inc | 1712 N Nagle Ave Chicago, IL 60707 |
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| Sava Electric | 7508 W Grand Ave Elmwood Park, IL 60707 |
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| Z Brothers Electric | 7916 W Grand Ave Elmwood Park, IL 60707 |
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| Marathon Electric Mfg Corp | 2102 N Natchez Ave Chicago, IL 60707 |
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