- Radio & Television Repair Shops , Exton - TV Repair
- Radio Broadcasting Program Producers, Exton
- Radio Communications Equipment & Systems , Exton
- Radio Equipment & Parts Stores & Dealers, Exton
- Radon Testing & Services, Exton
- Range & Oven Repair, Service & Sales, Exton
- Real Estate, Exton - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, Exton
- Real Estate Appraiser, Exton - Appraisal Services
- Real Estate Appraisers & Consulting Services, Exton
- Real Estate Developers, Exton
- Real Estate Management, Exton
- Real Estate Services, Exton
- Real Estate Services Franchises, Exton
- Record Storage, Destruction & Management, Exton
- Recording Studio - Equipment & Rental, Exton
- Recycling Drop-Off Centers, Exton
- Recycling Scrap & Waste Materials, Exton - Scrap Metal, etc
- Red Wing Shoes, Exton
- Reducing Exercise & Weight Control Services, Exton
- Refrigeration & Cooling Equipment, Parts & Supplies , Exton - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Exton - Ac, Freezer, Refrigerator Repair
- Refrigerator & Freezer Equipment, Parts & Supplies, Exton
- Refrigerator Sales, Service & Repair, Exton - Fridge
- Rehabilitation Centers, Products & Services, Exton
- Rehabilitation Specialists, Exton
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- Rehabilitational Job Training Services, Exton
- Religious Apparel & Vestments, Exton
- Religious Goods & Church Supplies Stores, Exton
- Religious Organizations, Exton
- Religious Practitioners, Exton
- Repair Services, Exton
- Research & Development Bureaus, Exton - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Exton - Laboratories
- Research Services, Exton
- Residential, Exton
- Residential Apartments, Exton
- Residential Construction Contractors, Exton - General Contractors
- Residential Electricians, Exton - Electric Contractors
- Residential Real Estate Companies, Exton
- Restaurant & Lounge, Bar, Or Pub, Exton
- Restaurant Equipment, Exton
- Restaurant Equipment & Supplies, Exton
- Restaurant Supplies & Equipment, Exton
- Restaurants/Food & Dining, Exton
- Retail Book Stores, Exton
- Retirement Communities & Home, Assisted Living & Apartments, Exton
- Retirement Homes, Exton
- Road Construction, Exton - Companies & Contractors
- Roofing Contractors, Exton - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Exton
- Rubbish Handling Equipment, Exton - Garbage Containers
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