- Machine Shop & Tool Repair Service, Leesport
- Machinery, Supplies & Equipment - Business Production Related, Leesport
- Machinery, Supplies & Equipment - Business Supplies Related, Leesport
- Machinery, Supplies & Equipment - Construction & Contractor Related, Leesport
- Management Consultants & Services, Leesport
- Manufacturing, Leesport
- Manufacturing Products, Leesport
- Marketing Schools, Leesport
- Masonry Materials & Supplies, Leesport
- Meat Market, Wholesale & Products, Leesport
- Mechanical Contractors, Leesport - Install, Service & Repair
- Medical Diagnostic Clinics, Leesport - Clinical Labs & Centers
- Medical Supplies & Equipment, Leesport
- Membership Sports & Recreation Clubs, Leesport
- Merchandise Sales Events, Leesport
- Metal Heat Treating, Leesport
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- Metal Products, Leesport
- Mini & Self Storage, Leesport
- Miscellaneous Business Services, Leesport
- Miscellaneous Government, Leesport
- Miscellaneous Personal Services, Leesport
- Motor Vehicle, Leesport
- Motor Vehicle Rental & Leasing, Leesport
- Motorcycle & Motor Scooters Dealers, Repair & Service, Leesport
- Motorcycle Parts, Accessories & Dealers, Leesport
- Motorcycle Repair & Service, Leesport
- Moving & Storage Consultants, Leesport
- Moving & Storage Supplies & Equipment, Leesport
- Moving Companies, Leesport
- Moving Truck Rental , Leesport
- Mulch, Peat & Moss Products, Leesport
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