| Naics index | Naics index description |
|---|---|
| 333310 | Periscopes manufacturing |
| 333310 | Photocopying machines manufacturing |
| 333310 | Photoflash equipment manufacturing |
| 333310 | Photographic equipment manufacturing |
| 333310 | Photographic lenses manufacturing |
| 333310 | Postage stamp vending machines manufacturing |
| 333310 | Power washer cleaning equipment manufacturing |
| 333310 | Prisms, optical, manufacturing |
| 333310 | Projection equipment (e.g., motion picture, slide), photographic, manufacturing |
| 333310 | Projection lenses manufacturing |