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| Primary NAICS Code | Primary Industry | Working Business Activity |
| 236 | Construction of Buildings |
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| NAICS Code 2 | Industry 2 | Working Business Activity |
| 237110 | Water and Sewer Line and Related Structures Construction |
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| NAICS Code 3 | Industry 3 | Working Business Activity |
| 238310 | Drywall and Insulation Contractors |
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| NAICS Code 4 | Industry 4 | Working Business Activity |
| 238910 | Site Preparation Contractors |
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| NAICS Code 5 | Industry 5 | Working Business Activity |
| 332812 | Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers |
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