| 325220 |
Yarn, noncellulosic fiber and filament, manufacturing |
| 325220 |
Yarn, noncellulosic fiber and filament, manufacturing and texturizing |
| 325220 |
Zein fibers and filaments manufacturing |
| 325311 |
Ammonia, anhydrous and aqueous, manufacturing |
| 325311 |
Ammonium nitrate manufacturing |
| 325311 |
Ammonium sulfate manufacturing |
| 325311 |
Anhydrous ammonia manufacturing |
| 325311 |
Fertilizers, mixed, made in plants producing nitrogenous fertilizer materials |
| 325311 |
Fertilizers, natural organic (except compost), manufacturing |
| 325311 |
Fertilizers, of animal waste origin, manufacturing |