| 511 | Healthcare Periodical Publishers | Company Product |
| 512 | Healthcare Products & Services | Company Product |
| 513 | Hearing Aids | Company Product |
| 514 | Hearing Protection | Company Product |
| 515 | Hearing Protections | Company Product |
| 516 | Hearing Protector | Company Product |
| 517 | Hearing Protectors | Company Product |
| 518 | Heart Rate | Company Product |
| 519 | Heart Rate Monitor | Company Product |
| 520 | Heartfelt Life Solutions | Company Product |
| 521 | Heat Absorbing Glass | Company Product |
| 522 | Heat Activated Stickers | Company Product |
| 523 | Heat Coolant | Company Product |
| 524 | Heat Detectors | Company Product |
| 525 | Heat Distribution Measurement Film | Company Product |
| 526 | Heat Exchanger Plates | Company Product |
| 527 | Heat Exchanger Repair | Company Product |
| 528 | Heat Exchanger Retubing | Company Product |
| 529 | Heat Exchangers | Company Product |
| 530 | Heat Exchangers Repair | Company Product |
| 531 | Heat Guns | Company Product |
| 532 | Heat Inhibitors | Company Product |
| 533 | Heat Insulation | Company Product |
| 534 | Heat-Proof Bellows | Company Product |
| 535 | Heat Protection For Hair | Company Product |
| 536 | Heat Protection Hair Serum | Company Product |
| 537 | Heat Pumps | Company Product |
| 538 | Heat Recovery Systems | Company Product |
| 539 | Heat Reduction Paints | Company Product |
| 540 | Heat Resistance Alloy | Company Product |