HTS code 9902.09.06 covers "Dispersions and suspensions of approximately 20 percent by weight 1-propene, 1,1,2,3,3,3-hexafluoro-, telomer with chlorotrifluoroethene, oxidized, reduced, ethyl ester, hydrolyzed, sodium salt (CAS No. 220207-15-8) in water (provided for in subheading 3402.11.50)" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.