- Car Detailing & Wash Service, New Haven - Auto Detailing
- Car Wash, Cleaning, Wax & Polish Service, New Haven
- Carpet, Rug & Linoleum Flooring Dealers, New Haven
- Casual Dining Restaurants, New Haven
- Cellular & Mobile Phone Equipment & Systems Installation, Repair & Service, New Haven
- Cellular & Mobile Phone Service, New Haven
- Cemeteries & Crematories, New Haven
- Child Care & Day Care Services, New Haven
- Child Related Social Services, New Haven
- Chiropractor, New Haven
- Churches 1 Of 3, New Haven
- Churches Seventh Day Adventist, New Haven
- City & County Administrative Agencies, New Haven
- City & County Government, New Haven
- Cleaning & Maintenance Services, New Haven
- CNC Machine Shop, New Haven
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- Coating Engraving & Allied Services Manufacturing, New Haven
- Commercial Equipment, New Haven
- Communications Services, New Haven
- Community Services, New Haven
- Computer & Audio Visual Services, New Haven
- Computer & Laptop Repair, New Haven - PC Repair Services
- Computer Repair, New Haven
- Concrete Contractors, New Haven - Concrete Construction & Concrete Companies
- Concrete Leveling, New Haven - Concrete Stabilizing
- Construction, New Haven
- Construction Services, New Haven
- Consultants & Services, New Haven
- Convenience Stores, New Haven
- Convention & Meeting Facilities, New Haven - Meeting Rooms
- Cooking Schools, New Haven
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