Aromatic Polymer Alloy
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3506915000 | 37.1% | CN | US | Official Doc |
| 3506990000 | 37.1% | CN | US | Official Doc |
| 3909310000 | 41.5% | CN | US | Official Doc |
| 3909390000 | 41.5% | CN | US | Official Doc |
| 3914006000 | 38.9% | CN | US | Official Doc |
AI Analysis
π§ͺ Aromatic Polymer Alloy (Chemical Raw Materials)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Strategic Compliance for US Imports
π Part 1: Product Definition & Classification: What is an "Aromatic Polymer Alloy"?
In international trade, Aromatic Polymer Alloy is not a single standardized chemical name but a generic descriptor for mixtures or blends of aromatic polymers. The critical challenge in classification lies in determining whether the product is primarily a Binder/Adhesive (Chapter 35) or a Primary Form Plastic/Polymer (Chapter 39).
Key Distinction Criteria: 1. Primary Function: Is it used to bind other materials together? β Likely Chapter 35 (3506). 2. Material Nature: Is it a synthetic polymer in primary forms (powders, pellets, liquids) used as a raw material? β Likely Chapter 39 (3909/3914). 3. Chemical Structure: Does it contain polyurethane/isocyanate components? β Look closely at 3909.
β οΈ Critical Note:
- If the product is sold as a glue, adhesive, or binder β Classify under 3506.
- If the product is a raw polymer resin (e.g., aromatic polyurethane, amino resins) β Classify under 3909.
- If the product is a generic primary form chemical β Classify under 3914.
π¦ Part 2: HS Code Classification Details (2026 Latest Tariff Alignment)
Based on the provided data, here are the five possible HS Codes for "Aromatic Polymer Alloy," along with their justification and tax implications.
| HS Code | Product Description & Justification | Total Tax Rate | Tax Breakdown |
|---|---|---|---|
3506.91.50.00 |
Aromatic Polymer Binder: Classified as 3506.91.50.00 because the polymer matches the binder usage. | 37.1% | Base: 2.1% + Section 301: 25.0% + Section 122: 10% |
3506.99.00.00 |
Other Aromatic Polymer Binder: Classified as 3506.99.00.00 because the binder usage aligns with polymer material. | 37.1% | Base: 2.1% + Section 301: 25.0% + Section 122: 10% |
3909.31.00.00 |
Poly(methylene phenyl isocyanate): Classified as 3909.31.00.00 because polymer matches poly(methylene phenyl isocyanate) material attributes. | 41.5% | Base: 6.5% + Section 301: 25.0% + Section 122: 10% |
3909.39.00.00 |
Other Amino Resins/Polyurethanes: Classified as 3909.39.00.00 because it falls under other amino resins/polyurethane categories. | 41.5% | Base: 6.5% + Section 301: 25.0% + Section 122: 10% |
3914.00.60.00 |
Primary Form Chemicals: Classified as 3914.00.60.00 because polymer matches primary form chemical application. | 38.9% | Base: 3.9% + Section 301: 25.0% + Section 122: 10% |
π Analysis of Tax Structure:
All five codes include:
- Base Tariff: Varies (2.1%, 3.9%, or 6.5%)
- Section 301 Tariff: 25.0% (Retaliatory tariff on Chinese goods)
- Section 122 Tariff: 10% (Specific trade remedy)
Total Effective Rate: Ranges from 37.1% to 41.5%.
π° Part 3: 2026 Latest Tariff Rate Detailed Explanation
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Time: Ongoing (Post-2025 adjustments)
π― 1. 3506.91.50.00 & 3506.99.00.00 β Adhesive/Binder Category
| Item | Content |
|---|---|
| Base Tariff | 2.1% |
| Section 301 Tariff | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 37.1% |
| Tax Calculation | CIF Value Γ 37.1% |
| De Minimis Exemption | β Not Eligible (Denied under current trade policies for these categories) |
| Legal Path | HTSUS:3506.91.50.00 β USITC:301 β Section 122 |
π Explanation:
- If your product is explicitly marketed as a binder or adhesive, it falls under Chapter 35.
- The 37.1% rate is high but slightly lower than the polymer resin categories.
- Documentation Required: Technical Data Sheet (TDS) proving "binder" functionality, Safety Data Sheet (SDS).
π― 2. 3909.31.00.00 & 3909.39.00.00 β Polyurethane/Amino Resin Category
| Item | Content |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Tariff | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption | β Not Eligible |
| Legal Path | HTSUS:3909.31.00.00 / 3909.39.00.00 β USITC:301 β Section 122 |
π Explanation:
- If the alloy is chemically an aromatic polyurethane or amino resin, it falls under Chapter 39.
- 41.5% is the highest rate in the dataset.
- Documentation Required: Chemical Structure Analysis, Proof of Isocyanate or Amino Resin content.
π― 3. 3914.00.60.00 β Other Primary Form Chemicals
| Item | Content |
|---|---|
| Base Tariff | 3.9% |
| Section 301 Tariff | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 38.9% |
| Tax Calculation | CIF Value Γ 38.9% |
| De Minimis Exemption | β Not Eligible |
| Legal Path | HTSUS:3914.00.60.00 β USITC:301 β Section 122 |
π Explanation:
- This is a "catch-all" for primary form polymers not specifically listed elsewhere.
- 38.9% is a middle-ground rate.
- Documentation Required: Proof of primary form (e.g., pellets, powder), non-specialized use.
π οΈ Part 4: Customs Clearance Practical Advice
β 1. Preparation Checklist (Mandatory)
| Document | Must Provide | Description |
|---|---|---|
| β Technical Data Sheet (TDS) | βοΈ | Must specify "Binder," "Polyurethane," or "Primary Form" clearly. |
| β Safety Data Sheet (SDS) | βοΈ | Required for chemical import; helps confirm hazard class. |
| β Product Photo (Label/Packaging) | βοΈ | Clear view of chemical name, batch number, and manufacturer. |
| β Third-Party Test Report | βοΈ | COA (Certificate of Analysis) to verify chemical composition. |
| β Commercial Invoice | βοΈ | Must match HS Code description exactly (e.g., "Aromatic Polyurethane Resin"). |
| β Bill of Lading | βοΈ | Ensure weight and volume match customs declaration. |
β 2. Declaration Strategy (Key Tips)
π₯ βFunction Defines Code, Composition Confirms Rate!β
| Scenario | Correct Declaration | Risk of Error |
|---|---|---|
| Sold as Glue/Adhesive | 3506.91.50.00 or 3506.99.00.00 |
Misdeclaring as polymer (39xx) may lead to audit for misclassification. |
| Sold as Raw Resin (PU) | 3909.31.00.00 or 3909.39.00.00 |
Higher tax (41.5%). Ensure chemical structure supports this. |
| Generic Polymer Pellets | 3914.00.60.00 |
Mid-rate (38.9%). Best if function is ambiguous but form is primary. |
| Mixed/Undefined | Seek Advance Ruling | Avoid manual classification errors that trigger penalties. |
β 3. Special Circumstances
| Situation | Handling Advice |
|---|---|
| OEM Custom Chemical | Provide clientβs technical specs to justify specific HS Code. |
| Blend of Polymers | If dominant component is isocyanate β 3909. If binder function dominates β 3506. |
| High-Value Specialty Polymer | Consider HTSUS Exclusions or Advance Rulings to pre-approve classification. |
| Small Sample/Shipment | Still subject to 37.1%β41.5% tax; no de minimis exemption for these codes. |
π Part 5: Global Market Comparison (2026)
| Country/Region | Recommended HS Code | Tariff Rate | Certification | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3506 / 3909 / 3914 |
37.1%β41.5% | EPA, TSCA | High tariffs due to Section 301 & 122. |
| π¨π³ China | 3506 / 3909 / 3914 |
0%β6% | CCC (if applicable) | Low import duty, but complex chemical registration. |
| πͺπΊ EU | 3506 / 3909 / 3914 |
0%β6.5% | REACH, CLP | No Section 301; but strict chemical compliance. |
| π¬π§ UK | 3506 / 3909 / 3914 |
0%β6.5% | UK REACH | Post-Brexit alignment with EU standards. |
π Conclusion:
- USA imposes the highest effective tax rate (37.1%β41.5%) on Chinese-origin aromatic polymer alloys.
- EU/UK/China have significantly lower base tariffs but require strict chemical safety compliance (REACH, CCC).
- Recommendation: For US imports, pre-clearance via Advance Ruling is strongly advised to minimize risk and cost.
π Part 6: Common Errors & Pitfalls (Lessons Learned)
β Error 1: Declaring a Binder as a Primary Polymer
π Consequence: Customs may audit for misclassification, leading to back taxes + penalties.
β Error 2: Ignoring Section 122 Tariff
π Consequence: Underpayment by 10%; results in seizure or delayed release.
β Error 3: Providing incomplete SDS
π Consequence: FDA/EPA may flag the shipment for safety review β Delays.
β Error 4: Using vague terms like "Polymer Mix"
π Consequence: Customs cannot determine correct HS Code β Manual classification by officer (higher risk).
β Correct Approach:
"Aromatic Polyurethane Resin, Primary Form, For Industrial Bonding, HS Code 3909.31.00.00, TSCA Compliant"
π― Part 7: Conclusion: Precision Classification, Cost Control, and Compliance
π― Remember the Rules:
πΉ βBinder = 3506 (37.1%)β
πΉ βPolyurethane = 3909 (41.5%)β
πΉ βGeneric Primary Form = 3914 (38.9%)β
πΉ βNo De Minimis for These Codes!β
π Tip:
If your product can be classified as 3506.91.50.00 (37.1%) instead of 3909.31.00.00 (41.5%), provide strong technical evidence of its binder function to save 4.4% in taxes.
π£ Immediate Action:
π Consult a licensed customs broker
π Prepare TDS, SDS, and COA
π Apply for CBP Advance Ruling to lock in the lowest applicable HS Code!
β¨ Professional Clearance Starts with Accurate Classification!
πΌ Every percent saved is pure profit!
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.