- Independent Church, Shelby
- Industrial & Commercial Cleaning Services & Companies, Shelby
- Industrial & Personal Service Paper, Boxes & Cardboard, Shelby
- Industrial Contractors, Shelby
- Industrial Goods & Products - Hard Goods - Large, Shelby
- Industrial Goods & Products - Hard Goods - Small, Shelby
- Industrial Goods & Products - Soft - Large & Small, Shelby
- Industrial Supply, Parts & Equipment - Miscellaneous, Shelby
- Industry, Shelby
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- Information Retrieval Services, Shelby
- Insurance Carriers, Shelby
- Insurance General Liability, Shelby
- Insurance Motorcycles, Shelby
- Insurance Renters, Shelby
- Investment Management Services, Shelby
- Investment Services & Advisors, Shelby
- Iron, Steel & Metal Fabricators, Shelby - Fabrication Companies
- Italian Restaurants, Shelby
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