- Machinery, Supplies & Equipment - Business Production Related, Trenton
- Manufacturing, Trenton
- Manufacturing Equipment & Supplies, Trenton
- Marble, Trenton
- Masonry Materials & Supplies, Trenton
- Meat Brokers, Trenton
- Men's Clothing Stores, Trenton - Clothes & Accessories
- Mental & Developmental Information & Referral Services, Trenton
- Merchandise Sales Events, Trenton
- Methodist Church, Trenton
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- Mirrors Manufacturers Supplies, Trenton
- Miscellaneous Government, Trenton
- Miscellaneous Industry, Trenton
- Miscellaneous Manufacturing, Trenton
- Miscellaneous Personal Services, Trenton
- Miscellaneous Photographers, Trenton
- Miscellaneous Professional, Trenton
- Mortgage Bankers & Correspondents, Trenton
- Mortgage Companies, Trenton
- Motor Vehicle, Trenton
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