| Business Name | Address | |
| Tech Inc | 62937 Constantine Rd Constantine, MI 49042 |
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| Windcrest Electric & Heating | 65164 Youngs Prairie Rd Constantine, MI 49042 |
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| Miller's Electric | 19512 Wittenberg Rd Constantine, MI 49042 |
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| Byler Electric | PO Box 86 Constantine, MI 49042 |
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| Park Electric Controls Inc | 16866 Roys Rd Constantine, MI 49042 |
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