- Radio Stations & Broadcasting Companies, Orange
- Radiotelephone Communications, Orange
- Ready Mix Concrete, Orange - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Orange
- Real Estate, Orange - Agent, Broker & Companies
- Real Estate Appraiser, Orange - Appraisal Services
- Real Estate Appraisers & Consulting Services, Orange
- Real Estate Management, Orange
- Real Estate Services, Orange
- Refuse Collection & Disposal, Orange
- Refuse Collection & Disposal Services, Orange
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- Refuse Systems & Garbage Disposal, Orange
- Religious Organizations, Orange
- Repair Services, Orange
- Research Services, Orange
- Residential, Orange
- Residential Apartments, Orange
- Restaurants/Food & Dining, Orange
- Riding & Rodeo Services, Orange
- Road Construction, Orange - Companies & Contractors
- Road Construction & Repair Contractors, Orange
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