Polyether Preparation
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3907210000 | 41.5% | CN | US | Official Doc |
| 3506915000 | 37.1% | CN | US | Official Doc |
| 3824992900 | 41.5% | CN | US | Official Doc |
| 3907290000 | 41.5% | CN | US | Official Doc |
| 3824994900 | 41.5% | CN | US | Official Doc |
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π§ͺ Polyether Preparation (Polyether Adhesive Mixtures)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professionalιε
³ Strategy
π I. Product Definition & Classification: Do You Really Understand "Polyether Adhesive Mixtures"?
Polyether-based adhesive mixtures are complex chemical formulations primarily used in bonding, sealing, and industrial assembly. In international trade, these products fall under various Harmonized System (HS) codes depending on their material composition, physical form, and primary function.
β οΈ Key Distinction Points:
- If the product is primarily a polyether raw material in its original chemical form β It may fall under Chapter 39 (Plastics).
- If the product is primarily formulated for adhesive purposes using polymer components β It may fall under Chapter 35 (Animal/Plant Proteins/Prepared Glues).
- If the product is a general-purpose chemical mixture containing polyether derivatives β It may fall under Chapter 38 (Miscellaneous Chemical Products).
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Material/State |
|---|---|---|---|
3907.21.00.00 |
Polyether adhesive mixture, material: polyether, form: original chemical mixture | Raw polyether blends for further processing | β Polyether |
3506.91.50.00 |
Polyether adhesive mixture, material: polymer, use: prepared adhesive | Ready-to-use adhesives based on polymeric components | β Polymer |
3824.99.29.00 |
Polyether adhesive mixture, material: polyether-based chemical substance, form: mixture | General chemical mixtures containing polyether | β Polyether Chemicals |
3907.29.00.00 |
Polyether adhesive mixture, material: polyether, form: within chemical raw materials category | Industrial chemical feedstock | β Polyether |
3824.99.49.00 |
Polyether adhesive mixture, use: adhesive, material: hydrocarbon derivative | Adhesives derived from hydrocarbon derivatives | β Hydrocarbon Derivative |
π Key Reminder:
- The classification depends heavily on the primary characteristic declared in the commercial invoice and technical datasheet.
- Chapter 39 items are often viewed as "plastics/polymers"; Chapter 35 as "glues/adhesives"; Chapter 38 as "other chemical products."
- Misclassification can lead to significant tariff differences and customs delays.
π° III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
β Applicable Country: United States (US)
β Country of Origin: China (CN)
β Effective Date: From November 10, 2025 (including subsequent imports)
π― 1. 3907.21.00.00 ββ Polyether Adhesive Mixture (Material: Polyether)
| Item | Content |
|---|---|
| Base Tariff | 6.5% (ad valorem) |
| Section 301 Surcharge | +25% (USITC Footnote 9903.88.01) |
| Section 122 IEEPA Surcharge | +10% (Targeting Chinese/HK products from Nov 10, 2025) |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption Eligible | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3907.21.00.00 β FOOTNOTE:9903.88.01 |
π Explanation:
- The 25% Section 301 duty applies to most Chinese-origin chemical plastics and polyethers.
- The 10% IEEPA duty is a new addition under International Emergency Economic Powers Act targeting specific chemical categories.
- Total 41.5% is a high tariff rate, requiring proactive cost assessment.
π― 2. 3506.91.50.00 ββ Polyether Adhesive Mixture (Material: Polymer, Use: Prepared Adhesive)
| Item | Content |
|---|---|
| Base Tariff | 2.1% (ad valorem) |
| Section 301 Surcharge | +25% |
| Section 122 IEEPA Surcharge | +10% |
| Total Tariff Rate | 37.1% |
| Tax Calculation | CIF Value Γ 37.1% |
| De Minimis Exemption Eligible | β No |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3506.91.50.00 β FOOTNOTE:9903.88.01 |
π Note:
- This code has a lower base rate (2.1%) compared to Chapter 39 codes (6.5%), but the surcharges remain identical.
- Suitable for products explicitly marketed and formulated as "prepared adhesives" rather than raw chemical mixtures.
π― 3. 3824.99.29.00 ββ Polyether Adhesive Mixture (Material: Polyether Chemicals)
| Item | Content |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Surcharge | +25% |
| Section 122 IEEPA Surcharge | +10% |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption Eligible | β No |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3824.99.29.00 β FOOTNOTE:9903.88.01 |
π Note:
- Classified under "Other chemical products," this code applies to polyether-based mixtures that do not fit neatly into plastics or traditional glues.
- High base tariff makes it expensive for direct import.
π― 4. 3907.29.00.00 ββ Polyether Adhesive Mixture (Material: Polyether, Form: Chemical Raw Materials)
| Item | Content |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Surcharge | +25% |
| Section 122 IEEPA Surcharge | +10% |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption Eligible | β No |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3907.29.00.00 β FOOTNOTE:9903.88.01 |
π Note:
- "Other polyethers" category. Often used when the specific polyether type doesn't match3907.21.
- Same high tariff burden as3907.21.
π― 5. 3824.99.49.00 ββ Polyether Adhesive Mixture (Use: Adhesive, Material: Hydrocarbon Derivative)
| Item | Content |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Surcharge | +25% |
| Section 122 IEEPA Surcharge | +10% |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption Eligible | β No |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3824.99.49.00 β FOOTNOTE:9903.88.01 |
π Note:
- Specifically targets adhesives made from hydrocarbon derivatives.
- If your polyether adhesive is primarily hydrocarbon-based, this code applies.
- High tariff rate persists.
π οΈ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
β 1. Required Documentation Checklist (None Missing)
| Document | Mandatory | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Detailed chemical composition, CAS numbers, pH, viscosity, curing time |
| β Technical Data Sheet (TDS) | βοΈ | Must clearly state primary use: "Adhesive," "Sealant," or "Raw Material" |
| β Safety Data Sheet (SDS) | βοΈ | Required for chemical safety assessment; must comply with GHS standards |
| β Commercial Invoice | βοΈ | Must accurately describe the product according to the chosen HS Code |
| β Certificate of Origin (CO) | βοΈ | Proves Chinese origin; crucial for applying surcharges correctly |
| β Packing List | βοΈ | Net/Gross weight, dimensions, hazard class (if applicable) |
| β Third-Party Test Report | βοΈ | MSDS verification, purity analysis, or adhesive strength tests |
β 2. Declaration Tips (Key Mantras)
π₯ "Characteristics Dictate Code, Function Determines Chapter, Name Must Be Precise!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Raw polyether blend for further mixing | 3907.21.00.00 or 3907.29.00.00 |
Mislabel as "Adhesive" β Risk of audit |
| Ready-to-use polyether glue | 3506.91.50.00 |
Mislabel as "Raw Material" β Lower base rate but potential reclassification |
| General chemical mixture with polyether | 3824.99.29.00 |
Vague description "Chemical Mix" β Delay |
| Hydrocarbon-based polyether adhesive | 3824.99.49.00 |
Wrong material description β Penalty |
π Crucial Point:
- If the product is already mixed and ready for bonding, emphasize "Prepared Adhesive" to potentially qualify for3506.91.50.00(37.1% vs 41.5%).
- If it is a bulk chemical intermediate, emphasize "Polyether Raw Material" for3907codes.
- Do not use vague terms like "Glue" without specifying material basis.
β 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| OEM Custom Polyether Adhesive | Provide client order + formulation sheet. Prove if it's a "raw material" or "finished adhesive." |
| Mixed Package (Adhesive + Primer) | Declare as one article if functionally inseparable. If separable, may need split declaration. |
| Hazardous Chemicals | Ensure SDS and UN Number are correctly declared. Failure leads to detention. |
| Export from Vietnam/Mexico | If re-exported, origin may shift. However, if polyether raw material is Chinese, origin tracing may still apply surcharges. |
π V. Global Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| πΊπΈ United States | 3506.91.50.00 (Best Case) |
37.1% (Adhesive) / 41.5% (Other) | EPA, OSHA, SDS | High surcharges apply |
| π¨π³ China | 3506.91.50.00 |
~2.1% - 6.5% | CCC (if applicable), GB Standards | Lower base rates, no surcharges |
| πͺπΊ European Union | 3506.91.50.00 |
~0% - 4% (varies) | REACH, CLP, SDS | REACH registration required for imports >1 ton |
| π¬π§ United Kingdom | 3506.91.50.00 |
~0% - 4% | UK REACH, UK CA | Post-Brexit rules apply |
| π¦πΊ Australia | 3506.91.50.00 |
~5% | AICIS, WHS | Low base tariff, no major surcharges |
π Conclusion:
- The US imposes the heaviest burden due to Section 301 and Section 122 duties.
- EU and UK focus on REACH/UK REACH compliance rather than high tariffs.
- Targeting3506.91.50.00in the US saves 4.4% compared to other codes, but requires solid evidence that the product is a "prepared adhesive."
π VI. Common Mistakes & Pitfall Guide (Lessons from Blood and Tears)
β Mistake 1: Declaring "Polyether" without specifying if it's a "Raw Material" or "Finished Adhesive"
π Consequence: Customs may reclassify to the highest applicable code (41.5%) + penalties.
β Mistake 2: Ignoring the "Section 122 IEEPA" 10% surcharge
π Consequence: Unexpected cost increase of 10% on CIF value. Not included in old tariff calculators!
β Mistake 3: Using "Glue" as the sole description
π Consequence: Lack of chemical detail leads to examination delays. Must provide CAS numbers and composition %.
β Mistake 4: Attempting to use De Minimis ($800) exemption
π Consequence: Denied. Chemical goods subject to Section 301/122 are explicitly excluded from de minimis relief for Chinese origin.
β Correct Practice:
"Polyether-Based Prepared Adhesive Mixture, Non-Hazardous, CAS No. [XXXX-XX-X], Viscosity: XXX cPs, Primary Use: Industrial Bonding, HS: 3506.91.50.00"
π― VII. Conclusion: Professional Declaration, Save Time and Money!
π― Remember the Mantra:
πΉ "Adhesive Form? Choose 3506. Raw Polyether? Choose 3907. Chemical Mix? Choose 3824."
πΉ "37.1% vs 41.5%: A 4.4% Difference That Matters!"
πΉ "Section 122 is New: Don't Forget the Extra 10%!"
π Pro Tip:
If your polyether adhesive is sourced from Vietnam, Mexico, or Thailand, verify the substantial transformation rules. If the polyether raw material is Chinese, the US may still apply surcharges under anti-circumvention rules.
Recommendation: Apply for a Binding Tariff Ruling (BTR) with US Customs and Border Protection (CBP) before shipment to secure the correct HS Code and tariff rate.
π£ Take Action Now:
π Consult a licensed customs broker + Provide Detailed TDS/SDS + Apply for Pre-Ruling
π Ensure your Polyether Adhesives clear customs smoothly, minimize duties, and maximize profits!
β¨ Professional Customs Clearance Starts with Precise Classification!
πΌ Every Penny of Your Cost Deserves Precise Calculation!
Customer Reviews
About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.