| Naics index | Naics index description |
|---|---|
| 339940 | Blackboards, framed, manufacturing |
| 339940 | Branding irons (i.e., marking irons) manufacturing |
| 339940 | Brushes, artists', manufacturing |
| 339940 | Canvas board, artist's, manufacturing |
| 339940 | Canvas, artist's, prepared on frames, manufacturing |
| 339940 | Carbon paper manufacturing |
| 339940 | Chalk (e.g., artist's, blackboard, carpenter's, marking, tailor's), manufacturing |
| 339940 | Chalkboards, framed, manufacturing |
| 339940 | Clay, modeling, manufacturing |
| 339940 | Crayons manufacturing |