| Código | Descripción |
|---|---|
| 831 | Benzol |
| 839 | Pitch, mineral tar and other crude chemical derivatives from coal and natural gas |
Rúbrica de la agregación NSTR agregada anglès a la cual pertenece
17 Coal chemicals
| Código | Descripción |
|---|---|
| 831 | Benzol |
| 839 | Pitch, mineral tar and other crude chemical derivatives from coal and natural gas |
17 Coal chemicals