- Car Detailing & Wash Service, Fort Fairfield - Auto Detailing
- Car Wash, Cleaning, Wax & Polish Service, Fort Fairfield
- Carpenters, Fort Fairfield - Carpentry Contractors
- Casual Dining Restaurants, Fort Fairfield
- Chambers Of Commerce, Fort Fairfield
- Churches 1 Of 3, Fort Fairfield
- City & County Government, Fort Fairfield
- Cleaning & Restoration Contractors, Including Sandblasting, Fort Fairfield
- Coffee, Espresso & Tea House Restaurants, Fort Fairfield
- Commercial Equipment, Fort Fairfield
- Community Services, Fort Fairfield
- Computer & Audio Visual Services, Fort Fairfield
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- Computer Networks, Fort Fairfield - Design & Systems
- Computer System Consultants, Fort Fairfield - IT Consulting Services
- Computer System Designers & Consultants, Fort Fairfield
- Construction, Fort Fairfield
- Consultants & Services, Fort Fairfield
- Convenience Stores, Fort Fairfield
- Corn Products, Fort Fairfield
- Corn Starches, Fort Fairfield
- Counseling Services, Fort Fairfield
- Credit Unions, Fort Fairfield
- Custom Parts & Accessories, Fort Fairfield
- Custom Sewing & Alterations, Fort Fairfield
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