- Racing Car Supplies, New Kensington
- Radiator Coolant & Solvents, New Kensington - Engine Coolant
- Radiator Repair, New Kensington - Gas Tank Repair
- Radio & Television Repair Shops , New Kensington - TV Repair
- Radio Communications Equipment & Systems , New Kensington
- Radio Stations & Broadcasting Companies, New Kensington
- Radiology Equipment & Services, New Kensington - X-Ray Equipment & Supplies
- Radon Testing & Services, New Kensington
- Ready Mix Concrete, New Kensington - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, New Kensington
- Real Estate, New Kensington - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, New Kensington
- Real Estate Appraiser, New Kensington - Appraisal Services
- Real Estate Appraisers & Consulting Services, New Kensington
- Real Estate Consultants, New Kensington
- Real Estate Developers, New Kensington
- Real Estate Management, New Kensington
- Real Estate Services, New Kensington
- Record Storage, Destruction & Management, New Kensington
- Recording Instruments Industrial & Scientific, New Kensington
- Recreational Organizations, New Kensington
- Recreational Services, New Kensington
- Recycling Drop-Off Centers, New Kensington
- Recycling Scrap & Waste Materials, New Kensington - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, New Kensington
- Refrigerated Beverage Dispenser, New Kensington - Water Coolers Equipment & Supplies
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- Refrigeration & Cooling Equipment, Parts & Supplies , New Kensington - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refuse Systems & Garbage Disposal, New Kensington
- Rehabilitation Centers, Products & Services, New Kensington
- Rehabilitation Specialists, New Kensington
- Religious Goods & Church Supplies Stores, New Kensington
- Religious Organizations, New Kensington
- Religious Practitioners, New Kensington
- Rental & Leasing Business Equipment, New Kensington
- Repair Services, New Kensington
- Research Services, New Kensington
- Residential, New Kensington
- Residential Apartments, New Kensington
- Residential Care Facilities, New Kensington
- Residential Construction Contractors, New Kensington - General Contractors
- Resorts & Hotels, New Kensington
- Restaurant Equipment Cleaning, New Kensington - Restaurant Cleaners
- Restaurant Lobster, New Kensington
- Restaurants/Food & Dining, New Kensington
- Retaining Wall Contractors, New Kensington - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement Communities & Home, Assisted Living & Apartments, New Kensington
- Rigging Equipment & Supplies, New Kensington
- Roofing Consultants, New Kensington - Roofing Companies
- Roofing Contractors, New Kensington - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, New Kensington
- Rustproofing Industrial, New Kensington
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