</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

HFO-1234ze Continuous Insulation Board Blowing Agent from Germany

HFO-1234ze for polyisocyanurate continuous lamination board production. 1,3,3,3-Tetrafluoropropene pure compound of HTS 2903.51.1000. Bulk tanker quantities for factory direct-fill systems.

Duty Rate — Germany → United States

10%

Rate breakdown

9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%

Import Tips

Tanker cleaning certificates between different HFO grades

Factory direct-fill system engineering drawings

Volume reconciliation reports for bonded warehouse transfers