U.S. exports of Other Vinyl Chloride Copolymers in Primary Forms (NESOI) (HS 390440) totaled $8.2M in August 2026.
Importers of Other Vinyl Chloride Copolymers in Primary Forms (NESOI) paid $60K in duties in August 2026, an average duty rate of 1.15% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataVinyl chloride copolymers not elsewhere specified — those incorporating monomers other than vinyl acetate — occupy this residual subheading, covering specialty grades such as vinyl chloride–maleic ester or vinyl chloride–vinylidene chloride copolymers used in barrier coatings and specialty adhesives. Classified under 3904400000, this is a lower-volume but technically diverse category. Canada and Germany are the leading suppliers, with Japan and South Korea also present, reflecting the niche nature of these specialty polymer grades and the limited number of global producers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
137 import shipments a month
The distinction turns on the identity of the comonomer: if the second principal monomer is vinyl acetate, the product classifies under 3904.30; if it is any other monomer (e.g., maleic anhydride, vinylidene chloride, or an acrylate), the product falls under 3904.40. Supplier-provided monomer composition certificates are the essential classification support document.
Importers should conduct a current antidumping and countervailing duty order search via the USITC and CBP ADCVD portal for the specific 10-digit HTS line (3904400000) and country of origin before entry, as trade-remedy coverage can change. No blanket statement about current order status should be relied upon without verification at the time of importation.
Subheading 6 of 9 in heading 3904
Subheading 390440 · $8.2M of $346.8M
ImportsExports
Imports
$5.2MYoY · free account
Exports
$8.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $53.1M of Other Vinyl Chloride Copolymers in Primary Forms (NESOI) and exported $83.6M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 390440 — Other Vinyl Chloride Copolymers in Primary Forms (NESOI), so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3904400000 | Other Vinyl Chloride Copolymers | $5.2M | 1.15% | 6.27% | $60K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3904400000 | Other Vinyl Chloride Copolymers | $8.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · August 2026
destination
Canada and Mexico together take 94% of it.
customs district
origin
entry
rate provision · imports
93.7% enters free of duty; duty collected equals 1.15% of imports for consumption.