- Machine Shop, North Grafton
- Machine Shop & Tool Repair Service, North Grafton
- Machinery, Supplies & Equipment - Business Production Related, North Grafton
- Machinery, Supplies & Equipment - Construction & Contractor Related, North Grafton
- Manicurists & Pedicurists, North Grafton
- Manufacturing, North Grafton
- Manufacturing Products, North Grafton
- Marriage & Family Counselors, North Grafton
- Martial Arts & Self Defense Schools, North Grafton
- Masonry Materials & Supplies, North Grafton
- Massage Therapists & Professional, North Grafton
- Massage Therapy, North Grafton
- Mental Health Specialists, North Grafton - Psychologist, Psychiatrist, Psychotherapist, etc
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- Methodist Church, North Grafton
- Mexican Restaurants, North Grafton
- Mini & Self Storage, North Grafton
- Miscellaneous Household Item Repair, North Grafton
- Miscellaneous Government, North Grafton
- Miscellaneous Manufacturing, North Grafton
- Miscellaneous Personal Services, North Grafton
- Miscellaneous Professional, North Grafton
- Mortgage Bankers & Correspondents, North Grafton
- Motor Vehicle, North Grafton
- Motor Vehicle Rental & Leasing, North Grafton
- Moving Truck Rental , North Grafton
- Museums, North Grafton
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