| 28120 | Actuator for hydraulic equipment (manufacture) |
| 28120 | Air preparation equipment for use in pneumatic systems (manufacture) |
| 28120 | Automatic process control valves (manufacture) |
| 28120 | Choke manifolds (manufacture) |
| 28120 | Cylinder for hydraulic equipment (manufacture) |
| 28120 | Cylinder for pneumatic control equipment (manufacture) |
| 28120 | Filter for pneumatic control equipment (manufacture) |
| 28120 | Flaps, diaphragms and other parts of hydraulic and pneumatic valves (manufacture) |
| 28120 | Flowline assembly (hydraulic equipment) (manufacture) |
| 28120 | Fluid power equipment (manufacture) |
| 28120 | Fluid power systems (manufacture) |
| 28120 | Hydraulic and pneumatic components (manufacture) |
| 28120 | Hydraulic and pneumatic cylinders (manufacture) |
| 28120 | Hydraulic and pneumatic hoses and fittings (manufacture) |
| 28120 | Hydraulic and pneumatic power engine and motor parts (manufacture) |
| 28120 | Hydraulic and pneumatic valves (manufacture) |
| 28120 | Hydraulic equipment for aircraft (manufacture) |
| 28120 | Hydraulic exhauster (manufacture) |
| 28120 | Hydraulic power engines and motors (manufacture) |
| 28120 | Hydraulic transmission equipment (manufacture) |
| 28120 | Hydro pneumatic device (manufacture) |
| 28120 | Hydrostatic transmissions (manufacture) |
| 28120 | Intensifier for hydraulic equipment (manufacture) |
| 28120 | Intensifier for pneumatic control equipment (manufacture) |
| 28120 | Jet pump (manufacture) |
| 28120 | Liquid elevator parts (manufacture) |
| 28120 | Montejus (compressed air chamber elevators) (manufacture) |
| 28120 | Motor for hydraulic equipment (manufacture) |
| 28120 | Motor for pneumatic equipment (manufacture) |
| 28120 | Pneumatic equipment and systems for aircraft (manufacture) |
| 28120 | Pneumatic power engines and motors (manufacture) |
| 28120 | Positioner for pneumatic control equipment (manufacture) |
| 28120 | Pump for hydraulic equipment (manufacture) |
| 28120 | Reservoir (hydraulic) (manufacture) |
| 28120 | Reservoir (pneumatic) (manufacture) |
| 28120 | Steam pulsators (pulsometers) (manufacture) |
| 28120 | Tube coupling and equipment for pneumatics (manufacture) |
| 28120 | Valve actuators (hydraulic and pneumatic) (manufacture) |
| 28120 | Valves for hydraulic equipment (manufacture) |
| 28120 | Valves for pneumatic control equipment (manufacture) |
| 28120 | |