- Radiotelephone Communications, Piedmont
- Ready Mix Concrete, Piedmont - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Piedmont
- Real Estate, Piedmont - Agent, Broker & Companies
- Real Estate Appraiser, Piedmont - Appraisal Services
- Real Estate Appraisers & Consulting Services, Piedmont
- Real Estate Attorneys & Lawyers, Piedmont
- Real Estate Services, Piedmont
- Recreational Equipment & Supplies Companies, Piedmont
- Recycling Drop-Off Centers, Piedmont
- Recycling Scrap & Waste Materials, Piedmont - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, Piedmont
- Refrigerated Storage & Warehouse, Piedmont - Warehousing
- Refrigeration & Cooling Equipment, Parts & Supplies , Piedmont - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigerator Sales, Service & Repair, Piedmont - Fridge
- Rehabilitation Centers, Products & Services, Piedmont
- Rehabilitation Specialists, Piedmont
- Rehabilitational Job Training Services, Piedmont
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- Religious Organizations, Piedmont
- Repair Services, Piedmont
- Research Services, Piedmont
- Residential, Piedmont
- Residential Apartments, Piedmont
- Residential Care Facilities, Piedmont
- Residential Construction Contractors, Piedmont - General Contractors
- Restaurant & Lounge, Bar, Or Pub, Piedmont
- Restaurant Equipment Repair & Service, Piedmont - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurants - Breakfast Brunch Lunch, Piedmont
- Restaurants/Food & Dining, Piedmont
- Restoration Contractors, Piedmont
- Riding & Rodeo Services, Piedmont
- Road Construction, Piedmont - Companies & Contractors
- Road Construction & Repair Contractors, Piedmont
- Roofing Consultants, Piedmont - Roofing Companies
- Roofing Contractors, Piedmont - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Piedmont
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