| 541 | Refrigeration System Design | Company Product |
| 542 | Refrigeration System Maintenance | Company Product |
| 543 | Refrigeration System Repair | Company Product |
| 544 | Roof Metal Panels | Company Product |
| 545 | Refrigerators | Company Product |
| 546 | Refurbished Engines | Company Product |
| 547 | Rough Terrain Bulldozer | Company Product |
| 548 | Rough Terrain Tractor | Company Product |
| 549 | Refurbished Tractor | Company Product |
| 550 | Refurbished Motor Grader | Company Product |
| 551 | Refurbished Wheel Grader | Company Product |
| 552 | Refurbished Wheel Loader | Company Product |
| 553 | Road Paving Machine | Company Product |
| 554 | Road Millers | Company Product |
| 555 | Road Planers | Company Product |
| 556 | Road Roller | Company Product |
| 557 | Road Milling Bits | Company Product |
| 558 | Road Milling Tool | Company Product |
| 559 | Refrigerated Dryers | Company Product |
| 560 | Ratchet Counter | Company Product |
| 561 | Rider Pallet Trucks | Company Product |
| 562 | Roof Washers | Company Product |
| 563 | Roofing Washers | Company Product |
| 564 | Roofing Nail With Synthetic Rubber Washers | Company Product |
| 565 | Roofing Nail With Washers | Company Product |
| 566 | Roofing Nail With PVC Washers | Company Product |
| 567 | Roofing Nail Washers | Company Product |
| 568 | Roofing Nails | Company Product |
| 569 | Rakes | Company Product |
| 570 | Resettable Padlock | Company Product |