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HTS 3903.90Chapter 39

HTS 3903.90Other: Duty Rate & Import Guide

Plastics · $13.5M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$13.5M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

LOW

1 rulings — · 0 reg · 0 cases

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: Free · 🇧🇷 Brazil: 3 NCM codes

Compare All →

Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, HMRC / DG TAXUD / CBSA / SISCOMEX · As of 2026-04-28 · Updates monthly

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Trade Remedy

Additional Tariffs Apply

Section 301 — China Tariffs+25%

List 2 — ~$16B of Chinese goods (semiconductors, chemicals, plastics)

Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.

Effective 2018-07-06

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (3)

CodeDescriptionRate
3903.90Other:
3903.90.10.00Methyl methacrylate-butadiene-styrene (MBS) copolymers6.5%
3903.90.50.00Other6.5%

CBP Rulings (1)

N019207Classification

Tariff classification of high impact polystyrene resins from Mexico and Canada

Matching Export Code (Schedule B)

3903900000Schedule B

POLYMERS OF STYRENE, IN PRIMARY FORMS, NESOI

Census Bureau export classification matching this HTS import code.

3903.30.00.003903.90.10.00