| 310210 | 310210 - Fertilizers, mineral or chemical; nitrogenous, urea, whether |
| 310221 | 310221 - Fertilizers, mineral or chemical; nitrogenous, ammonium sulph |
| 310229 | 310229 - Fertilizers, mineral or chemical; nitrogenous, other than amm |
| 310230 | 310230 - Fertilizers, mineral or chemical; nitrogenous, ammonium nitra |
| 310240 | 310240 - Fertilizers, mineral or chemical; ammonium nitrate with calci |
| 310250 | 310250 - Fertilizers, mineral or chemical; nitrogenous, sodium nitrate |
| 310260 | 310260 - Fertilizers, mineral or chemical; nitrogenous, double salts a |
| 310270 | Calcium cyanamide |
| 310280 | 310280 - Fertilizers, mineral or chemical; nitrogenous, mixtures of ur |
| 310290 | 310290 - Fertilizers, mineral or chemical; nitrogenous, other kinds in |