- Casual Dining Restaurants, Mattawa
- Central American Restaurants, Mattawa
- Chemical Products, Mattawa - Chemical Distributors, Dealers, Wholesale, etc
- Chemicals Agricultural, Mattawa
- Child Care & Day Care Services, Mattawa
- Chiropractor, Mattawa
- Churches 1 Of 3, Mattawa
- City & County Administrative Agencies, Mattawa
- City & County Government, Mattawa
- Clinics, Mattawa
- Clothing Stores, Mattawa - Clothes & Accessories
- CNC Machine Shop, Mattawa
- Cocktail Lounges, Mattawa
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- Coffee, Espresso & Tea House Restaurants, Mattawa
- Community Services, Mattawa
- Computer & Audio Visual Services, Mattawa
- Computer Programming & Software Development Services, Mattawa
- Concrete, Mattawa - Cement & Concrete Products, Suppliers, Companies
- Concrete & Cement, Mattawa
- Concrete Product Manufacturers, Mattawa
- Condiments & Sauces, Mattawa
- Construction, Mattawa
- Consultants & Services, Mattawa
- Convenience Stores, Mattawa
- Custom Parts & Accessories, Mattawa
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