| 325311 |
Fertilizers, of sewage origin, manufacturing |
| 325311 |
Nitric acid manufacturing |
| 325311 |
Nitrogenous fertilizer materials manufacturing |
| 325311 |
Plant foods, mixed, made in plants producing nitrogenous fertilizer materials |
| 325311 |
Urea manufacturing |
| 325312 |
Ammonium phosphates manufacturing |
| 325312 |
Defluorinated phosphates manufacturing |
| 325312 |
Diammonium phosphates manufacturing |
| 325312 |
Fertilizers, mixed, made in plants producing phosphatic fertilizer materials |
| 325312 |
Phosphatic fertilizer materials manufacturing |