731 — Precision workers in metal and related materials
| Código | Descripción |
|---|---|
| 7311 | Precision-instrument makers and repairers |
| 7312 | Musical instrument makers and tuners |
| 7313 | Jewellery and precious-metal workers |
| Código | Descripción |
|---|---|
| 7311 | Precision-instrument makers and repairers |
| 7312 | Musical instrument makers and tuners |
| 7313 | Jewellery and precious-metal workers |