HS Code 391400
6-digit classification for Ionexchangers Based On Polymers of…, with duty lookup and 1688 checks before payment
Official description: Ionexchangers based on polymers of headings 3901 to 3913, in primary forms
Also searched as: ion exchange resin, ion exchanger, polymer ion exchanger, ion exchange beads
Classification
How 391400 breaks down
Plastics and articles thereof
Ionexchangers based on polymers of headings 3901 to 3913, in primary forms
Ionexchangers based on polymers of headings 3901 to 3913, in primary forms
Short answer
What HS code 391400 means before paying a 1688 supplier
HS code 391400 is the 6-digit HS 2022 starting point for ionexchangers based on polymers of…; often searched as ion exchange resin, ion exchanger, polymer ion exchanger. Before using it in a landed-cost estimate, confirm the product material, function, destination market, and the official tariff source. Treat any 1688 supplier code as a clue, not the final import classification.
Use
Start with this 6-digit HS code and compare the product's material, function, and use.
Verify
Check the destination market's official HTS, TARIC, commodity-code, duty, VAT, or GST source.
Decide
If classification, documents, or restricted-product risk is unclear, submit the product for a written check.
Covered products
What products fall under HS code 391400?
Buyers sourcing ionexchangers based on polymers of headings 3901… from 1688 commonly describe it in these ways. If your product matches, 391400 is likely the right 6-digit starting point — confirm material and intended use against the official tariff.
US import duty · China origin
US import duty for HS 391400
Published USITC HTS rates for ionexchangers based on polymers of headings 3901… (391400), aggregated at the 6-digit level. A research estimate — the final rate depends on your full 8-10 digit HTS line.
Base MFN rate
1.9%
Average across 2 US national tariff lines under 391400.
Section 301 (China)
+25%
Covered lines under this code carry a Section 301 China surcharge.
Effective China-origin
≈26.9%
Base rate with applicable 301 surcharges — before MPF/HMF and any trade-action changes.
Source: USITC HTS (base MFN) + Section 301 overlay · data as of 2026-07-05 · rates change with trade actions — always confirm your full 10-digit line on hts.usitc.gov before pricing a product. Other markets (EU/UK/CA/AU/SG) below.
Import duty by market
Where to check the import duty for HS 391400
The 6-digit code is universal, but duty, VAT and GST are set by the destination country and depend on the full national tariff line with China as the country of origin. Start from the official source for your market.
United States
USITC / CBP · Harmonized Tariff Schedule (HTS)
European Union
TARIC · Access2Markets
United Kingdom
HMRC · UK Integrated Online Tariff
Canada
CBSA · Canadian Customs Tariff
Australia
ABF · Australian customs tariff
Singapore
Singapore Customs · Singapore Trade Classification (HS)
Compare China-origin duty evidence across supported markets
Use the HS & import duty checker to estimate duty + VAT/GST for 391400 by destination before you pay a 1688 supplier.
Questions
HS code 391400: common questions
What is the US import duty for HS code 391400 from China?
As published in the USITC HTS (data as of 2026-07-05), the base MFN rate for 391400 averages about 1.9%, and Section 301 China surcharges apply on covered lines (up to +25%), bringing the effective China-origin rate to roughly 26.9% (averaged across 2 national tariff lines). This is a research estimate — the final rate depends on your full 8-10 digit HTS line; verify on hts.usitc.gov.
What is HS code 391400?
HS code 391400 is the World Customs Organization 6-digit HS 2022 subheading for "Ionexchangers based on polymers of headings 3901 to 3913, in primary forms". The first two digits (39) are the chapter — Plastics and articles thereof — and digits 3-4 (3914) are the heading. Countries add further digits (8-10) for their national tariff line.
What products fall under HS 391400?
Common products classified under 391400 include ion exchange resin, ion exchanger, polymer ion exchanger, ion exchange beads and similar items matching ionexchangers based on polymers of headings 3901…. The correct code still depends on the product's material, function and intended use.
How do I find the import duty for HS code 391400?
Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market — USITC HTS (US), TARIC / Access2Markets (EU), GOV.UK Trade Tariff (UK), CBSA (Canada), ABF (Australia) or Singapore Customs — and look up the full national code with China as the country of origin.
Is HS code 391400 the same in every country?
The first 6 digits (391400) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.
Can I trust the HS code a 1688 supplier gives me?
Treat a supplier-provided code as a clue, not a final classification. It can be incomplete, China-export-specific, or mismatched to your destination's rules. Verify against the official tariff and your product's actual material and use.
Is HSN code 391400 the same as HS code 391400?
Yes at the 6-digit level. India's HSN (Harmonized System of Nomenclature) uses the same WCO base, so HSN 391400 covers the same "ionexchangers based on polymers of headings 3901…" scope; India then extends it to 8 digits for GST and customs. Check the Indian Customs tariff (CBIC) for the full national line.
Chapter 39
Explore Plastics and articles thereof
Sourcing ionexchangers based on polymers of headings 3901… from 1688?
Get a written pre-payment check — classification clues, China-origin landed cost, and supplier risk — before you commit. 5,754 HS codes covered.