HSChapter 39
U.S. imports of acrylonitrile-butadiene-styrene (abs) copolymers in primary forms (HS 390330) totaled $27.0M in April 2026, traded with 26 countries.
Importers of Acrylonitrile-Butadiene-Styrene (ABS) Copolymers in Primary Forms paid $2.5M in duties in April 2026 — an effective duty rate of 13% on $19.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataABS is one of the most widely traded engineering thermoplastics globally, valued for its balance of impact resistance, rigidity, and surface finish quality — properties that make it indispensable in automotive interiors, consumer electronics housings, and pipe fittings. The entire heading resolves to a single US tariff line (3903300000) in primary forms. South Korea leads US import supply, followed by Mexico and Taiwan, reflecting the concentration of large-scale ABS production capacity in East Asia and North America. Importers should monitor Section 301 exposure for shipments originating from certain origins and verify origin documentation carefully given the multi-country supplier base.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
ABS copolymers classified under 3903300000 have been subject to Section 301 tariffs when originating from China. Importers should confirm the current status and applicable list with a licensed customs broker, as Section 301 actions and exclusions are subject to ongoing review and modification.
The key distinction is the presence of butadiene rubber in ABS, which provides impact toughness absent in SAN. Customs classification hinges on the polymer's chemical composition: ABS (heading 3903.30) contains all three monomers — acrylonitrile, butadiene, and styrene — while SAN (heading 3903.20) contains only styrene and acrylonitrile. Supplier technical data sheets confirming monomer composition are the primary classification support document.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $7.0M | $9.8M | +$2.8M |
| KOREA, SOUTH | $12.4M | $1.1M | -$11.3M |
| CANADA | $389K | $5.5M | +$5.1M |
| TAIWAN | $4.6M | $93K | -$4.5M |
| MALAYSIA | $284K | $1.4M | +$1.1M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 3903300000 | ACRYLONITRILE-BUTADIENE-STYRENE (ABS) COPOLYMERS | $27.0M | 13.12% | $2.5M |
ACRYLONITRILE-BUTADIENE-STYRENE (ABS) COPOLYMERS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3903300000 | ACRYLONITRILE-BUTADIENE-STYRENE (ABS) COPOLYMERS | $21.7M |
ACRYLONITRILE-BUTADIENE-STYRENE (ABS) COPOLYMERS
9.0M kg
ARTICLES OF PLASTICS, NESOI
HS 392690
FLOOR, WALL, ETC COVERS, VINYL CHLORIDE POLYMERS
HS 391810
TABLEWARE AND KITCHENWARE OF PLASTICS
HS 392410
SACKS & BAGS (INCL CONES) OF POLYMERS OF ETHYLENE
HS 392321
HOUSEHOLD AND TOILET ARTICLES NESOI OF PLASTICS
HS 392490
PLATES, SHEETS ETC, NON-CELL ETC, POLYMER
HS 392010
| State | Imports | Exports | Balance |
|---|---|---|---|
| Illinois | $6.5M | $4.3M | -$2.2M |
| California | $3.9M | $3.6M | -$259K |
| Texas | $1.9M | $1.8M | -$116K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LOS ANGELES, CA | $8.0M | $781K | -$7.2M |
| LAREDO, TX | $2.4M | $4.6M | +$2.2M |
| EAGLE PASS, TX | $3.2M | -- | -$3.2M |