- Labor Organizations, Hamtramck
- Laundromats & Dry-Cleaning, Coin-Operated, Hamtramck
- Lawn & Garden Services, Hamtramck
- Lawn Maintenance Services, Hamtramck
- Lawyers & Attorneys, Hamtramck
- Legal Professionals, Hamtramck
- Libraries, Hamtramck
- Life Insurance, Hamtramck
- Liquid & Bulk Storage, Hamtramck
- Liquor Stores, Hamtramck
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- Loans Personal, Hamtramck
- Locks, Hamtramck
- Locksmiths, Hamtramck - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Hamtramck
- Logistics Freight, Hamtramck
- Long Haul Trucking Companies, Hamtramck
- Lubricating Oils , Hamtramck - Motor Oil
- Lumber & Wood Products Manufacturers, Hamtramck
- Lumber Companies, Hamtramck - Wholesale, Manufacturers & Suppliers
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