| 751 | Residual Current Operated Circuit Breakers | Company Product |
| 752 | Residual Current Protective Devices | Company Product |
| 753 | Residual Oil Vapour Measurement | Company Product |
| 754 | Residue Pumps | Company Product |
| 755 | Resin Conduit | Company Product |
| 756 | Resin Cross Belts | Company Product |
| 757 | Resin Systems | Company Product |
| 758 | Resins | Company Product |
| 759 | Resistance Flash Welding Equipment | Company Product |
| 760 | Resistance Meters | Company Product |
| 761 | Resistance Seam Welding Equipment | Company Product |
| 762 | Resistance Spot Welding Equipment | Company Product |
| 763 | Resistance Temperature Detector Probes | Company Product |
| 764 | Resistance Temperature Detectors | Company Product |
| 765 | Resistance Testers | Company Product |
| 766 | Resistance Thermometers | Company Product |
| 767 | Resistance Welding Electrodes | Company Product |
| 768 | Resistance Welding Equipment | Company Product |
| 769 | Resistance Wire | Company Product |
| 770 | Resistant Plastic Steel Corrosion | Company Product |
| 771 | Resistivity Meters | Company Product |
| 772 | Resistor | Company Product |
| 773 | Resistor Networks | Company Product |
| 774 | Resistors | Company Product |
| 775 | Resonator Crystals | Company Product |
| 776 | Resonators | Company Product |
| 777 | Resorcinol | Company Product |
| 778 | Resorts | Company Product |
| 779 | Resource Recovery | Company Product |
| 780 | Respirator | Company Product |