| Business Name | Address | |
| LA Grange Sign Co | PO Box 1119 La Grange Park, IL 60526 |
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| Duplex Electric | 8812 45th Pl # 4 Brookfield, IL 60513 |
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| Marsala Corp | 4527 Dubois Blvd Brookfield, IL 60513 |
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| Cirrus Electric | 9100 Plainfield Rd Brookfield, IL 60513 |
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| Campbell Electric Inc | 3310 Elm Ave Brookfield, IL 60513 |
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