Group 23.9
| SNI code | Activity |
|---|---|
| C | Manufacturing |
| 23 | Manufacture of other non-metallic mineral products |
| 23.9 | Manufacture of abrasive products and non-metallic mineral products n.e.c. |
| 23.91 | Production of abrasive products |
| 23.99 | Manufacture of other non-metallic mineral products n.e.c. |