| Business Name | Address | |
| Royal Electric Inc | 7512 Main St Sykesville, MD 21784 |
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| Crown Electric Co | 12100 Woodford Dr Marriottsville, MD 21104 |
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| Clark Electric Co | 2397 State Route 97 Cooksville, MD 21723 |
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| Interface Electric | 15240 Frederick Rd Woodbine, MD 21797 |
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| Jem Electric Co | 7891 Old Washington Rd Woodbine, MD 21797 |
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