- Radiator Coolant & Solvents, Troy - Engine Coolant
- Radio Communications Equipment & Systems , Troy
- Radio Stations & Broadcasting Companies, Troy
- Radiologists, Troy - Radiology Doctors, Physicians & Surgeons
- Radiotelephone Communications, Troy
- Radon Testing & Services, Troy
- Railroad, Troy - Commuter & Passenger Transport
- Railroad & Subway Construction Contractors, Troy
- Railroad Car Repair & Maintenance, Troy
- Railroad Companies, Troy
- Railroad Contractors, Troy
- Railroad Repair & Maintenance, Troy
- Real Estate, Troy - Agent, Broker & Companies
- Real Estate Appraiser, Troy - Appraisal Services
- Real Estate Appraisers & Consulting Services, Troy
- Real Estate Attorneys & Lawyers, Troy
- Real Estate Developers, Troy
- Real Estate Management, Troy
- Real Estate Rentals, Troy
- Real Estate Services, Troy
- Record Storage, Destruction & Management, Troy
- Records, Tapes, CDs - Used & Vintage, Troy
- Records, Tapes, Compact Discs Wholesale, Troy
- Recreational Services, Troy
- Recycling Drop-Off Centers, Troy
- Recycling Scrap & Waste Materials, Troy - Scrap Metal, etc
- Refrigeration & Cooling Equipment, Parts & Supplies , Troy - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Troy - Ac, Freezer, Refrigerator Repair
- Refrigerator Sales, Service & Repair, Troy - Fridge
- Rehabilitation Centers, Products & Services, Troy
- Rehabilitation Specialists, Troy
- Rehabilitational Job Training Services, Troy
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- Religious Education, Troy
- Religious Organizations, Troy
- Religious Practitioners, Troy
- Rental & Leasing Business Equipment, Troy
- Repair Services, Troy
- Repossession Services, Troy
- Research & Development Bureaus, Troy - Commercial, Economic, Sociological & Educational Research
- Research & Development Labs, Troy - Laboratories
- Research Services, Troy
- Residential, Troy
- Residential Apartments, Troy
- Residential Care Facilities, Troy
- Residential Construction Contractors, Troy - General Contractors
- Restaurant & Lounge, Bar, Or Pub, Troy
- Restaurants - Breakfast Brunch Lunch, Troy
- Restaurants/Food & Dining, Troy
- Retail Book Stores, Troy
- Retaining Wall Contractors, Troy - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement Communities & Home, Assisted Living & Apartments, Troy
- Retirement Communities & Homes, Troy
- Rheumatologists, Troy - Rheumatology Doctors, Physicians & Surgeons
- Riding & Rodeo Services, Troy
- Rigging Equipment & Supplies, Troy
- Rigging Service & Crane Hoisting, Troy
- Risk Management Consultants, Troy
- Roofing Consultants, Troy - Roofing Companies
- Roofing Contractors, Troy - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Royalties Oil & Mineral, Troy
- RV Parts, Accessories & Equipment, Troy - ATV & Recreation Vehicles
- RV Repair, Troy - Recreational Vehicle
- RV Repair & Service, Troy - ATV & Recreation Vehicles
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