Harmonized Tariff Schedule of the U.S. › Chapter 39 Plastics and articles thereof
3913.90.50.00Tariff 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
Other
3913.90.50.00
Rates of duty
General rate (Column 1)6.5%
SpecialFree (A*, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Column 22.2¢/kg + 33.5%
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 2026-10-26 · base rate 6.5%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 2 (9903.88.02)9903.88.02Applies+25%8-digit subheading 3913.90.50 is on L2
Confirmed total 44% · max 44%Full duty breakdown →