| 601 | Thermo-Chillers | Company Product |
| 602 | Thermo-Hygrograph | Company Product |
| 603 | Thermochromic Labels | Company Product |
| 604 | Thermochromic Stickers | Company Product |
| 605 | Thermocouple | Company Product |
| 606 | Thermocouple Converters | Company Product |
| 607 | Thermocouple Extension Wires | Company Product |
| 608 | Thermocouple Probes | Company Product |
| 609 | Thermocouple Wires | Company Product |
| 610 | Thermocouple-Handheld | Company Product |
| 611 | Thermocouples | Company Product |
| 612 | Thermographers | Company Product |
| 613 | Thermohygrograph | Company Product |
| 614 | Thermohygrographs | Company Product |
| 615 | Thermohygrometers | Company Product |
| 616 | Thermometers | Company Product |
| 617 | Thermoplastic Elastomer | Company Product |
| 618 | Thermoplastic-Acrylic Solvent-Based Paints | Company Product |
| 619 | Thermoscale Films | Company Product |
| 620 | Thermosensors | Company Product |
| 621 | Thermosetting Resins | Company Product |
| 622 | Thermostat | Company Product |
| 623 | Thermostat Hose | Company Product |
| 624 | Thermostat Housing | Company Product |
| 625 | Thermostat Sensors | Company Product |
| 626 | Thermostatic Expansion Valve | Company Product |
| 627 | Thermostats | Company Product |
| 628 | Thermowell | Company Product |
| 629 | Thickener | Company Product |
| 630 | Thickening Agents | Company Product |