- Railroad Companies, Imperial
- Ready Mix Concrete, Imperial - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Imperial
- Real Estate, Imperial - Agent, Broker & Companies
- Real Estate Services, Imperial
- Recycling Drop-Off Centers, Imperial
- Recycling Scrap & Waste Materials, Imperial - Scrap Metal, etc
- Religious Organizations, Imperial
- Repair Services, Imperial
- Research Services, Imperial
- Residential, Imperial
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- Residential Apartments, Imperial
- Restaurants - Breakfast Brunch Lunch, Imperial
- Restaurants/Food & Dining, Imperial
- Retaining Wall Contractors, Imperial - Build & Repair - Blocks, Concrete, Stones, etc
- Riding & Rodeo Services, Imperial
- Robots & Robotics System, Imperial
- Roofing Consultants, Imperial - Roofing Companies
- Roofing Contractors, Imperial - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, Imperial
- Rv Parks, Imperial
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