Harmonized Tariff Schedule of the U.S. › Chapter 39 Plastics and articles thereof
3913.90.20.90Tariff line
Classification path
Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms
3913
Other
Polysaccharides and their derivatives
Other
3913.90.20.90
Rates of duty
General rate (Column 1)5.8%
SpecialFree (A*, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Column 250%
Unitkg
Free (A*, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Printed page 1701
Measure flags
for origin CN, entry date 2026-10-25 · base rate 5.8%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 3 (9903.88.03)9903.88.03Applies+25%8-digit subheading 3913.90.20 is on L3
- AD/CVD: 1 order in placeConditional—Cash deposits follow the company-specific rate (ACE case module). Coverage depends on each order's scope. The table below lists case numbers, status and the all-others rate. The all-others deposit rate is counted in the maximum exposure, not in the confirmed total.
- AD/CVD 1 casesConditionalAD 154.07%A570985
- PGAFDA FD3APHIS Core AQ1EPA EP7
Confirmed total 43.3% · max 197.37%Full duty breakdown →