- Ice Cream & Frozen Yogurt, Narragansett
- Ice Wholesale, Narragansett - Dry Ice
- Importers, Narragansett
- Indian Restaurants, Narragansett
- Industrial & Commercial Cleaning Services & Companies, Narragansett
- Industrial & Commercial Real Estate, Narragansett
- Industrial & Heavy Equipment Repair & Service, Narragansett
- Industrial Contractors, Narragansett
- Industrial Goods & Products - Hard Goods - Large, Narragansett
- Industrial Goods & Products - Hard Goods - Small, Narragansett
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- Industrial Heaters & Boilers, Narragansett
- Industrial Waterway & Dock Construction, Narragansett
- Industry, Narragansett
- Information Bureaus & Services, Narragansett
- Inspection & Testing Services, Narragansett
- Insulation Contractors, Narragansett - Blown-In, Spray Foam, Batt, Fiberglass, Attic Insulation Installation & Service
- Insurance Carriers, Narragansett
- Investment Management Services, Narragansett
- Investment Services & Advisors, Narragansett
- Italian Restaurants, Narragansett
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