| Naics index | Naics index description |
|---|---|
| 424690 | Salts, industrial, merchant wholesalers |
| 424690 | Sealants merchant wholesalers |
| 424690 | Sulfuric acid merchant wholesalers |
| 424690 | Surface active agents merchant wholesalers |
| 424690 | Synthetic rubber merchant wholesalers |
| 424690 | Turpentine merchant wholesalers |
| 424690 | Water softening compounds merchant wholesalers |
| 424690 | Waxes (except petroleum) merchant wholesalers |
| 424690 | Welding gases merchant wholesalers |
| 424690 | Wood treating preparations merchant wholesalers |