- Classification Code: C33
- Description: Painting and Decorating Contractor
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- Classification Code: D40
- Description: Service Station Equipment and Maintenance
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- Classification Code: ASB
- Description: Asbestos Certification
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- Classification Code: D53
- Description: Wood Tanks
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- Classification Code: C7
- Description: Low Voltage Systems Contractor
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- Classification Code: D62
- Description: Air and Water Balancing
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- Classification Code: C35
- Description: Lathing and Plastering Contractor
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- Classification Code: C20
- Description: Warm-Air Heating, Ventilating and Air-Conditioning Contractor
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- Classification Code: C36
- Description: Plumbing Contractor
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- Classification Code: D06
- Description:
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- Classification Code: C53
- Description: Swimming Pool Contractor
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- Classification Code: B
- Description: General Building Contractor
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- Classification Code: D09
- Description:
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- Classification Code: C34
- Description: Pipeline Contractor
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- Classification Code: D30
- Description: Pile Driving and Pressure Foundation Jacking
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- Classification Code: D38
- Description: Sand and Water Blasting
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- Classification Code: C50
- Description: Reinforcing Steel Contractor
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- Classification Code: C16
- Description: Fire Protection Contractor
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- Classification Code: C60
- Description: Welding Contractor
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- Classification Code: D35
- Description: Pool and Spa Maintenance
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- Classification Code: C9
- Description: Drywall Contractor
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- Classification Code: A
- Description: General Engineering Contractor
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- Classification Code: HAZ
- Description: Hazardous Substance Removal Certification
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- Classification Code: C11
- Description: Elevator Contractor
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- Classification Code: C10
- Description: Electrical Contractor
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- Classification Code: C8
- Description: Concrete Contractor
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- Classification Code: D31
- Description: Pole Installation and Maintenance
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- Classification Code: C51
- Description: Structural Steel Contractor
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- Classification Code: D39
- Description: Scaffolding
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- Classification Code: C29
- Description: Masonry Contractor
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