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A-General Engineering
ASB-Asbestos Certification
B-General Building
C2-Insulation & Acoustical Contractor
C4-Boiler, Hot-Water Heating & Steam Fitting Contractor
C5-Carpentry Contractor
C6-Cabinet & Millwork Contractor
C7-Low Voltage Systems Contractor
C8-Concrete Contractor
C9-Drywall Contractor
C10-Electrical Contractor
C11-Elevator Contractor
C12-Earthwork & Paving Contractor
C13-Fencing Contractor
C15-Flooring & Floor Covering Contractor
C16-Fire Protection Contractor
C17-Glazing Contractor
C20-Warm-Air Heating, Ventilating & Air-Conditioning Contractor
C21-Building Moving/Demolition Contractor
C23-Ornamental Metal Contractor
C27-Landscape Contractor
C28-Lock and Security Equipment Contractor
C29-Masonry Contractor
C31-Construction Zone Traffic Control Contractor
C32-Parking & Highway Improvement Contractor
C33-Painting & Decorating Contractor
C34-Pipeline Contractor
C35-Lathing and Plastering Contractor
C36-Plumbing Contractor
C38-Refrigeration Contractor
C39-Roofing Contractor
C42-Sanitation System Contractor
C43-Sheet Metal Contractor
C45-Electrical Sign Contractor
C46-Solar Contractor
C47-General Manufactured Housing Contractor
C50-Reinforcing Steel Contractor
C51-Structural Steel Contractor
C53-Swimming Pool Contractor
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C54-Tile Contractors, Tile & Mosaic Contractor
C55-Water Conditioning Contractor
C57-Well Drilling Contractor
C60-Welding Contractor
C61-Limited Specialty Contractor
D03-Awning Contractor
D04-Central Vacuum System Contractor
D06-Concrete Related Service Contractor
D09-Drilling, Blasting, & Oil Field Work Contractor
D10-Elevated Floor Contractor
D12-Synthetic Product Contractor
D16-Hardware, Locks & Safe Contractor
D21-Machinery & Pump Contractor
D24-Metal Product Contractor
D28-Doors, Gates & Activating Device Contractor
D29-Paperhanging Contractor
D30-Pile Driving/Pressure Foundation Jacking/Gunite Contractor
D31-Pole Installation & Maintenance Contractor
D34-Prefabricated Products/Equipment Contractor
D35-Pool & Spa Maintenance Contractor
D38-Sand & Water Blasting Contractor
D39-Scaffolding Contractor
D40-Service Station Equipment and Maintenance Contractor
D41-Siding and Decking Contractor
D42-Sign Installation Contractor
D49-Tree Service Contractor
D50-Suspended Ceiling Contractor
D52-Window Covering Contractor
D53-Wood Tank Contractor
D56-Trenching Contractor
D59-Hydroseed Spraying Contractor
D62-Air & Water Balancing Contractor
D63-Construction Clean-Up Contractor
D64-Non-Specialized Contractor
D65-Weatherization & Energy Conservation Contractor
HAZ-Hazardous Substance Removal Certification
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