| Tariff Classification |
| section 06 | Products of the chemical or allied industries |
| chapter 29 | Organic chemicals |
| 29.03 | Halogenated derivatives of hydrocarbons: |
| －Unsaturated fluorinated derivatives of acyclic hydrocarbons: |
| 2903.51 | －－2,3,3,3-Tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz): |
| －－－2,3,3,3-Tetrafluoropropene (HFO-1234yf) |
|