- Racing Car Supplies, Aston
- Radio Stations & Broadcasting Companies, Aston
- Radon Testing & Services, Aston
- Ready Mix Concrete, Aston - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Aston
- Real Estate, Aston - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Aston
- Real Estate Appraiser, Aston - Appraisal Services
- Real Estate Appraisers & Consulting Services, Aston
- Real Estate Broker, Aston
- Real Estate Management, Aston
- Real Estate Services, Aston
- Record Storage, Destruction & Management, Aston
- Recreational Good Manufacturers, Aston
- Recycling Scrap & Waste Materials, Aston - Scrap Metal, etc
- Rehabilitation Centers, Products & Services, Aston
- Rehabilitation Specialists, Aston
- Religious Education, Aston
- Religious Goods & Church Supplies Stores, Aston
- Religious Organizations, Aston
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- Rent To Own Furniture, Aston
- Rental & Leasing Business Equipment, Aston
- Repair Services, Aston
- Research & Development Bureaus, Aston - Commercial, Economic, Sociological & Educational Research
- Research Services, Aston
- Residential, Aston
- Residential Apartments, Aston
- Resins Wholesale & Retail, Aston - Plastic Raw Materials
- Restaurant Equipment, Aston
- Restaurant Equipment & Supplies, Aston
- Restaurant Supplies & Equipment, Aston
- Restaurants/Food & Dining, Aston
- Retail Book Stores, Aston
- Retirement Communities & Home, Assisted Living & Apartments, Aston
- Rigging Equipment & Supplies, Aston
- Road Construction, Aston - Companies & Contractors
- Roof Cleaning & Maintenance, Aston - Roofing Services
- Roofing Consultants, Aston - Roofing Companies
- Roofing Contractors, Aston - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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