- Racing Car Supplies, North Highlands
- Radiator Coolant & Solvents, North Highlands - Engine Coolant
- Radiator Repair, North Highlands - Gas Tank Repair
- Radiator Repair & Rebuild, North Highlands
- Radio & Television Repair Shops , North Highlands - TV Repair
- Radio Stations & Broadcasting Companies, North Highlands
- Radiotelephone Communications, North Highlands
- Ready Mix Concrete, North Highlands - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, North Highlands
- Real Estate, North Highlands - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, North Highlands
- Real Estate Developers, North Highlands
- Real Estate Services, North Highlands
- Record Storage, Destruction & Management, North Highlands
- Recreational Equipment & Supplies Companies, North Highlands
- Recycling Drop-Off Centers, North Highlands
- Recycling Scrap & Waste Materials, North Highlands - Scrap Metal, etc
- Refrigeration & Cooling Equipment, Parts & Supplies , North Highlands - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, North Highlands - Ac, Freezer, Refrigerator Repair
- Refrigerator & Freezer Equipment, Parts & Supplies, North Highlands
- Religious Organizations, North Highlands
- Religious Practitioners, North Highlands
- Religious Services, North Highlands
- Repair Services, North Highlands
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- Repossession Services, North Highlands
- Research Services, North Highlands
- Residential, North Highlands
- Residential Apartments, North Highlands
- Residential Care Facilities, North Highlands
- Residential Construction Contractors, North Highlands - General Contractors
- Residential Real Estate - Rental & Leasing, North Highlands
- Restaurant Equipment, North Highlands
- Restaurant Equipment & Supplies, North Highlands
- Restaurant Equipment Repair & Service, North Highlands - Bakery, Beverage, Food & Soda Fountain Equipment
- Restaurant Supplies & Equipment, North Highlands
- Restaurants - Breakfast Brunch Lunch, North Highlands
- Restaurants/Food & Dining, North Highlands
- Retail Book Stores, North Highlands
- Rifle & Pistol Ranges, North Highlands
- Roadside Assistance, Road Service & Towing Service, North Highlands
- Robots & Robotics System, North Highlands
- Roof Cleaning & Maintenance, North Highlands - Roofing Services
- Roofing Consultants, North Highlands - Roofing Companies
- Roofing Contractors, North Highlands - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Roofing Materials & Supplies, North Highlands
- RV & Campers Repair & Service, North Highlands
- Rv Parks, North Highlands
- RV Repair, North Highlands - Recreational Vehicle
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