| 335311 |
Saturable transformers manufacturing |
| 335311 |
Signaling transformers, electric, manufacturing |
| 335311 |
Specialty transformers, electric, manufacturing |
| 335311 |
Substation transformers, electric power distribution, manufacturing |
| 335311 |
Transformers, electric power, manufacturing |
| 335311 |
Transformers, ignition, for use on domestic fuel burners, manufacturing |
| 335311 |
Transformers, reactor, manufacturing |
| 335311 |
Transformers, separate solid-state arc-welding, manufacturing |
| 335311 |
Transmission and distribution voltage regulators manufacturing |
| 335311 |
Voltage regulating transformers, electric power, manufacturing |