- Ice Cream & Frozen Yogurt, Hanover
- Ice Wholesale, Hanover - Dry Ice
- Importers, Hanover
- Independent Church, Hanover
- Industrial & Commercial Cleaning Services & Companies, Hanover
- Industrial & Commercial Real Estate, Hanover
- Industrial & Heavy Equipment Repair & Service, Hanover
- Industrial Contractors, Hanover
- Industrial Equipment & Machinery, Hanover
- Industrial Goods & Products - Hard Goods - Large, Hanover
- Industrial Goods & Products - Hard Goods - Small, Hanover
- Industrial Goods & Products - Soft - Large & Small, Hanover
- Industrial Waste Disposal, Hanover
- Industrial Waste Recycling, Hanover
- Industry, Hanover
- Information Bureaus & Services, Hanover
- Information Processing & Retrieval Systems, Hanover
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- Information Retrieval Services, Hanover
- Information Technology Services, Hanover - IT Service
- Insulation Material , Hanover - Contractors Supplies & Equipment
- Insurance Brokers, Hanover
- Insurance Carriers, Hanover
- Insurance Consulting & Information Services, Hanover
- Insurance Farm, Hanover
- Insurance Renters, Hanover
- Insurance Services, Hanover
- Interdenominational Church, Hanover
- Interior Designers, Hanover
- Interior Designers & Decorators, Hanover
- Interior Designers Professional, Hanover
- Internal Medicine Doctors, Hanover - Internists Physicians & Surgeons
- Investment Services & Advisors, Hanover
- Italian Foods, Hanover
- Italian Restaurants, Hanover
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