| [332117] Powder Metallurgy Part Manufacturing |
| [332721] Precision Turned Product Manufacturing |
| [332811] Metal Heat Treating |
| [333295] Semiconductor Machinery Manufacturing |
| [333298] All Other Industrial Machinery Manufacturing |
| [333314] Optical Instrument and Lens Manufacturing |
| [333911] Pump and Pumping Equipment Manufacturing |
| [333912] Air and Gas Compressor Manufacturing |
| [333994] Industrial Process Furnace and Oven Manufacturing |
| [334411] Electron Tube Manufacturing |
| [334515] Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals |
| [334516] Analytical Laboratory Instrument Manufacturing |
| [334517] Irradiation Apparatus Manufacturing |
| [335110] Electric Lamp Bulb and Part Manufacturing |
| [335999] All Other Miscellaneous Electrical Equipment and Component Manufacturing |
| [339111] Laboratory Apparatus and Furniture Manufacturing |
