- Ice Cream & Frozen Yogurt, New Philadelphia
- Ice Wholesale, New Philadelphia - Dry Ice
- Individual & Family Information & Referral Services, New Philadelphia
- Industrial & Commercial Cleaning Services & Companies, New Philadelphia
- Industrial & Commercial Real Estate, New Philadelphia
- Industrial & Heavy Equipment Repair & Service, New Philadelphia
- Industrial & Personal Service Paper, Boxes & Cardboard, New Philadelphia
- Industrial Contractors, New Philadelphia
- Industrial Equipment & Machinery, New Philadelphia
- Industrial Goods & Products - Hard Goods - Large, New Philadelphia
- Industrial Goods & Products - Hard Goods - Small, New Philadelphia
- Industrial Goods & Products - Soft - Large & Small, New Philadelphia
- Industrial Lifts, New Philadelphia
- Industrial Machinery Supplies & Equipment - Leasing & Rental, New Philadelphia
- Industrial Supply, Parts & Equipment - Miscellaneous, New Philadelphia
- Industry, New Philadelphia
- Information Bureaus & Services, New Philadelphia
- Insulation Contractors, New Philadelphia - Blown-In, Spray Foam, Batt, Fiberglass, Attic Insulation Installation & Service
- Insurance Brokers, New Philadelphia
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- Insurance Carriers, New Philadelphia
- Insurance Consulting & Information Services, New Philadelphia
- Insurance Farm, New Philadelphia
- Insurance General Liability, New Philadelphia
- Insurance Motorcycles, New Philadelphia
- Insurance Renters, New Philadelphia
- Insurance Services, New Philadelphia
- Interior Designers, New Philadelphia
- Interior Designers & Decorators, New Philadelphia
- Internal Medicine Doctors, New Philadelphia - Internists Physicians & Surgeons
- Internet Development, New Philadelphia
- Internet Entertainment, New Philadelphia - Internet Services
- Internet Home Page Development & Consulting, New Philadelphia
- Internet Providers, New Philadelphia
- Internet Services, New Philadelphia
- Investment Management Services, New Philadelphia
- Investment Services & Advisors, New Philadelphia
- Investments & Mutual Funds, New Philadelphia
- Italian Restaurants, New Philadelphia
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