- Machine Shop & Tool Repair Service, Berthierville
- Machinery, Supplies & Equipment - Business Production Related, Berthierville
- Machinery, Supplies & Equipment - Business Supplies Related, Berthierville
- Mailing, Delivery & Courier Service, Berthierville
- Major Appliances, Berthierville - Household & Kitchen
- Management Consultants & Services, Berthierville
- Manufacturing, Berthierville
- Manufacturing Products, Berthierville
- Marinas & Marina Services, Berthierville
- Masonry Contractors, Berthierville - Stone Mason, Brick Mason - Install & Repair
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- Masonry Materials & Supplies, Berthierville
- Massage Therapy, Berthierville
- Mechanical Contractors, Berthierville - Install, Service & Repair
- Mens & Womens Clothing, Berthierville
- Miscellaneous Business Services, Berthierville
- Monuments, Tombstones, Markers & Memorials, Berthierville
- Motor Vehicle, Berthierville
- Motorcycle Parts, Accessories & Dealers, Berthierville
- Museums, Berthierville
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