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Primary NAICS Code | Primary Industry | Working Business Activity |
541380 | Testing Laboratories |
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NAICS Code 2 | Industry 2 | Working Business Activity |
541330 | Engineering Services |
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NAICS Code 3 | Industry 3 | Working Business Activity |
541370 | Surveying and Mapping (except Geophysical) Services |
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NAICS Code 4 | Industry 4 | Working Business Activity |
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NAICS Code 5 | Industry 5 | Working Business Activity |
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