- Machinery And Equipment Manufacturers, Township of Washington
- Machinery, Supplies & Equipment - Business Supplies Related, Township of Washington
- Major Appliances, Township of Washington - Household & Kitchen
- Management Consultants & Services, Township of Washington
- Manicurists & Pedicurists, Township of Washington
- Manufacturers Agents & Representatives, Township of Washington
- Manufacturers Representative, Township of Washington - Reps, Independent Sales Representative, Sales Agent, etc
- Manufacturing, Township of Washington
- Marine Surveyors & Adjustors, Township of Washington
- Marriage & Family Counselors, Township of Washington
- Martial Arts & Self Defense Schools, Township of Washington
- Material Handling Equipment, Township of Washington - Conveyor Belt, Pallet Jack, Forklift, etc
- Meat Market, Wholesale & Products, Township of Washington
- Medical Equipment Manufacturers, Township of Washington
- Medical Research Facilities, Township of Washington - Research & Development Centers
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- Medical Supplies & Equipment, Township of Washington
- Membership Sports & Recreation Clubs, Township of Washington
- Mental Health Specialists, Township of Washington - Psychologist, Psychiatrist, Psychotherapist, etc
- Miscellaneous Government, Township of Washington
- Miscellaneous Industry, Township of Washington
- Miscellaneous Manufacturing, Township of Washington
- Miscellaneous Personal Services, Township of Washington
- Miscellaneous Professional, Township of Washington
- Money Change Machines, Township of Washington
- Money Counting & Wrapping, Township of Washington
- Monuments, Tombstones, Markers & Memorials, Township of Washington
- Mortgage Bankers & Correspondents, Township of Washington
- Motor Vehicle, Township of Washington
- Movie Theaters, Township of Washington
- Moving Companies, Township of Washington
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