| [333314] Optical Instrument and Lens Manufacturing |
| [334411] Electron Tube Manufacturing |
| [334416] Electronic Coil, Transformer, and Other Inductor Manufacturing |
| [334418] Printed Circuit Assembly (Electronic Assembly) Manufacturing |
| [334419] Other Electronic Component Manufacturing |
| [334511] Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing |
| [334516] Analytical Laboratory Instrument Manufacturing |
| [334518] Watch, Clock, and Part Manufacturing |
| [335129] Other Lighting Equipment Manufacturing |
| [335311] Power, Distribution, and Specialty Transformer Manufacturing |
| [335999] All Other Miscellaneous Electrical Equipment and Component Manufacturing |
| [336415] Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing |
| [336419] Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing |
