| 3102 | | Mineral or chemical fertilizers, nitrogenous: | | | | |
| 3102.10.00 | 00 | Urea, whether or not in aqueous solution | t | Free | | Free |
| 3102.21.00 | 00 | Ammonium sulfate; double salts and mixtures of ammonium sulfate and ammonium nitrate: | | | | |
| 3102.21.00 | 00 | Ammonium sulfate | t | Free | | Free |
| 3102.29.00 | 00 | Other | t | Free | | Free |
| 3102.30.00 | 00 | Ammonium nitrate, whether or not in aqueous solution | t | Free | | Free |
| 3102.40.00 | 00 | Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances | t | Free | | Free |
| 3102.50.00 | 00 | Sodium nitrate | t | Free | | Free |
| 3102.60.00 | 00 | Double salts and mixtures of calcium nitrate and ammonium nitrate | t | Free | | Free |
| 3102.80.00 | 00 | Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution | t | Free | | Free |
| 3102.90.01 | 00 | Other, including mixtures not specified in the foregoing subheadings | t | Free | | Free |
