Harmonized Tariff Schedule of the U.S. › Chapter 39 Plastics and articles thereof
3903.90.10.00Tariff line
Classification path
Polymers of styrene, in primary forms
3903
Other
Methyl methacrylate-butadiene-styrene (MBS) copolymers
3903.90.10.00
Rates of duty
General rate (Column 1)6.5%
SpecialFree (A, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Column 215.4¢/kg + 67.5%
Unitkg
Free (A, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Printed page 1693
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 3903.90.10 is on L2
Confirmed total 44% · max 44%Full duty breakdown →