- Machinery, Supplies & Equipment - Business Production Related, Durham
- Machinery, Supplies & Equipment - Business Supplies Related, Durham
- Machinery, Supplies & Equipment - Construction & Contractor Related, Durham
- Management Consultants & Services, Durham
- Manicurists & Pedicurists, Durham
- Manufacturing, Durham
- Manufacturing Products, Durham
- Masonry Materials & Supplies, Durham
- Meat Market, Wholesale & Products, Durham
- Medical Supplies & Equipment, Durham
- Metal Spinning Manufacturers, Durham
- Metal Stampings Manufacturers, Durham
- Mexican Restaurants, Durham
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- Mini & Self Storage, Durham
- Mining, Durham
- Miscellaneous Business Product Repair, Durham
- Miscellaneous Manufacturing, Durham
- Miscellaneous Metal Work Manufacturers, Durham
- Miscellaneous Personal Services, Durham
- Miscellaneous Professional, Durham
- Modular & Mobile Homes For Sale, Durham - Manufactured Homes Sale & Service
- Mortgage Bankers & Correspondents, Durham
- Mortgages Commercial & Industrial, Durham
- Motor Vehicle, Durham
- Motor Vehicle Rental & Leasing, Durham
- Moving Truck Rental , Durham
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