- Racing Including Track Operations, Sylvania
- Radiator Coolant & Solvents, Sylvania - Engine Coolant
- Radiator Repair, Sylvania - Gas Tank Repair
- Radio Stations & Broadcasting Companies, Sylvania
- Ready Mix Concrete, Sylvania - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Sylvania
- Real Estate, Sylvania - Agent, Broker & Companies
- Real Estate Appraiser, Sylvania - Appraisal Services
- Real Estate Appraisers & Consulting Services, Sylvania
- Real Estate Services, Sylvania
- Recycling Scrap & Waste Materials, Sylvania - Scrap Metal, etc
- Rehabilitation Centers, Products & Services, Sylvania
- Rehabilitation Specialists, Sylvania
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- Religious Education, Sylvania
- Religious Organizations, Sylvania
- Religious Practitioners, Sylvania
- Repair Services, Sylvania
- Residential, Sylvania
- Residential Apartments, Sylvania
- Residential Care Facilities, Sylvania
- Residential Construction Contractors, Sylvania - General Contractors
- Restaurants/Food & Dining, Sylvania
- Retirement Communities & Home, Assisted Living & Apartments, Sylvania
- Riding & Rodeo Services, Sylvania
- Rv Parks, Sylvania
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