| 541 | Relative Pressure Switches | Company Product |
| 542 | Relay | Company Product |
| 543 | Relay Control Transmitter | Company Product |
| 544 | Relay Controller | Company Product |
| 545 | Relay Covers | Company Product |
| 546 | Relay Fixed | Company Product |
| 547 | Relay Unit | Company Product |
| 548 | Relay,control Unit | Company Product |
| 549 | Relays | Company Product |
| 550 | Relays Contactors | Company Product |
| 551 | Release Bearing | Company Product |
| 552 | Release Coatings | Company Product |
| 553 | Release Lever | Company Product |
| 554 | Release Lever Oil Seal | Company Product |
| 555 | Releif Valves | Company Product |
| 556 | Reliable | Company Product |
| 557 | Reliable Air-Conditioning Service | Company Product |
| 558 | Reliable Aircon Services | Company Product |
| 559 | Reliable Packaging Supplier Singapore | Company Product |
| 560 | Reliance Repair Services | Company Product |
| 561 | Reliance Repairs | Company Product |
| 562 | Relief Valves | Company Product |
| 563 | Religious Goods | Company Product |
| 564 | Religious Organizations | Company Product |
| 565 | Religious Schools | Company Product |
| 566 | Relocatable Walls | Company Product |
| 567 | Relocation Consultants | Company Product |
| 568 | Relocation Services | Company Product |
| 569 | Remanufactured Toner Cartridges | Company Product |
| 570 | Remanufacturing | Company Product |