| 1621 | Hydraulic Valves | Company Product |
| 1622 | Hydraulic Vibrodrives | Company Product |
| 1623 | Hydraulic Water Blasters | Company Product |
| 1624 | Hydraulic Water Pressure Pumps | Company Product |
| 1625 | Hydraulic Water Pumps | Company Product |
| 1626 | Hydraulic Winches | Company Product |
| 1627 | Hydraulic Wire | Company Product |
| 1628 | Hydraulics Power Machines | Company Product |
| 1629 | Hydro Blasting | Company Product |
| 1630 | Hydro-Distillates | Company Product |
| 1631 | Hydro-Jetting Equipment | Company Product |
| 1632 | Hydro-Jetting Pumps | Company Product |
| 1633 | Hydro-Jetting Services | Company Product |
| 1634 | Hydro-Jetting Specialist | Company Product |
| 1635 | Hydroblasting Ship Hull | Company Product |
| 1636 | Hydrochloric Acid | Company Product |
| 1637 | Hydrocortisone | Company Product |
| 1638 | Hydrocyclone | Company Product |
| 1639 | Hydrodynamic Coupling | Company Product |
| 1640 | Hydrofluoric Acid | Company Product |
| 1641 | Hydrogen | Company Product |
| 1642 | Hydrogen Analysers | Company Product |
| 1643 | Hydrogen Chloride | Company Product |
| 1644 | Hydrogen Gas Distributors | Company Product |
| 1645 | Hydrogen Gas Manufacturers | Company Product |
| 1646 | Hydrogen Generators | Company Product |
| 1647 | Hydrogen Peroxide | Company Product |
| 1648 | Hydrogen Pressure Regulators | Company Product |
| 1649 | Hydrogen Sulfide Analysers | Company Product |
| 1650 | Hydrogen Water | Company Product |