- Malls & Shopping Centers, Flourtown
- Management Consultants & Services, Flourtown
- Manicurists & Pedicurists, Flourtown
- Manufacturing, Flourtown
- Manufacturing Products, Flourtown
- Marriage & Family Counselors, Flourtown
- Martial Arts & Self Defense Schools, Flourtown
- Medical & Dental Management, Flourtown
- Medical Billing Services, Flourtown
- Medical Supplies & Equipment, Flourtown
- Membership Sports & Recreation Clubs, Flourtown
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- Mental Health Specialists, Flourtown - Psychologist, Psychiatrist, Psychotherapist, etc
- Miscellaneous Government, Flourtown
- Miscellaneous Manufacturing, Flourtown
- Miscellaneous Personal Services, Flourtown
- Miscellaneous Professional, Flourtown
- Mortgage Bankers & Correspondents, Flourtown
- Mortgages & Loans, Flourtown
- Motor Vehicle, Flourtown
- Movie Theaters, Flourtown
- Moving & Storage Consultants, Flourtown
- Moving Companies, Flourtown
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