- Radiator Coolant & Solvents, Ontario - Engine Coolant
- Radiator Repair, Ontario - Gas Tank Repair
- Real Estate, Ontario - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Ontario
- Real Estate Broker, Ontario
- Real Estate Services, Ontario
- Recording Studio Service - Sound & Video, Ontario
- Recycling Drop-Off Centers, Ontario
- Religious Organizations, Ontario
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- Repair Services, Ontario
- Residential, Ontario
- Residential Apartments, Ontario
- Residential Construction Contractors, Ontario - General Contractors
- Restaurants/Food & Dining, Ontario
- Roof Cleaning & Maintenance, Ontario - Roofing Services
- Roofing Consultants, Ontario - Roofing Companies
- Roofing Contractors, Ontario - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Ontario
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