High Purity Polyester Resin Raw Material
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3907992000 | 35.0% | CN | US | Official Doc |
| 3907912000 | 35.0% | CN | US | Official Doc |
| 3907995050 | 41.5% | CN | US | Official Doc |
| 3903110000 | 41.5% | CN | US | Official Doc |
| 3903190000 | 41.5% | CN | US | Official Doc |
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AI Analysis
π High Purity Polyester Resin Raw Materials
π HS Code Classification & Customs Clearance Guide | 2026 Tariff Analysis | Strategic Import Strategy
π I. Product Definition & Classification: What Exactly Is "High Purity Polyester Resin"?
Polyester resin raw materials are fundamental building blocks in the chemical industry, widely used in manufacturing unsaturated polyester resins, polymers, and composite materials. In international trade, classification depends strictly on the chemical structure and physical form (primary shape vs. finished product).
β οΈ Critical Distinction:
- General Polyester (Unsaturated): Typically falls under 3907. Specifically, if it is unsaturated, it goes to 3907.91; if it is a different type of primary polyester, it may fall under 3907.99.
- Polystyrene (PS): Despite similar polymer uses, Polystyrene is chemically distinct and falls under 3903. Do not confuse Polyester with Polystyrene!
- Polyether Resins: These are ether-based, not ester-based, and fall under 3907.21.
For "High Purity Polyester Resin Raw Material", the most likely classifications are within the 3907 series, depending on whether it is unsaturated.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority)
Based on the provided data, here are the precise HS codes for polyester-related raw materials and related polymers often confused with them:
| HS Code | Product Description | Summary from Data | Primary Form |
|---|---|---|---|
3907.99.20.00 |
High Purity Polyester Resin Raw Material | Classified as a primary product of the polyester class | Primary Shape |
3907.91.20.00 |
High Purity Polyester Resin Raw Material | Classified as Unsaturated Polyester in Primary Shape | Unsaturated Primary |
3903.11.00.00 |
High Purity Polystyrene Resin | Primary form of Polystyrene (NOT polyester) | Primary Shape |
3903.19.00.00 |
High Purity Polystyrene Resin | Primary product attributes of Polystyrene | Primary Product |
3907.21.00.00 |
High Purity Polyether Resin Raw Material | Polyether resin in original form | Original Form |
π Key Insight:
- If your material is unsaturated polyester (commonly used in fiberglass composites, boat hulls, etc.), use3907.91.20.00.
- If it is a general polyester (e.g., PET or PBT raw material) not specifically unsaturated, use3907.99.20.00.
- Warning: Do not use Polystyrene (3903) codes for polyester. They are chemically different and may trigger additional regulatory scrutiny if misdeclared.
π° III. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: Current rates apply (Note: Specific "122 Clause" and Section 301/IEEPA tariffs apply)
π― 1. 3907.91.20.00 β Unsaturated Polyester in Primary Shape
| Item | Content |
|---|---|
| Base Tariff | 0.0% (Ad Valorem) |
| Section 301 Tariff | +25.0% (Additional Tariff for Chinese Origin) |
| "122 Clause" Tariff | +10.0% (Specific trade action tariff) |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Exemption | β Not Eligible (High value goods typically excluded) |
| Legal Path | USITC:3907.91.20.00 β Section 301: Footnote 9903.88.01 β 122 Clause |
π Explanation:
- Base 0%: The US has a low base duty on many chemical precursors.
- 25% Section 301: Standard additional tariff on Chinese chemical products.
- 10% 122 Clause: Additional specific tariff under Section 122 or related trade actions.
- Total 35%: This is a significant cost factor for imports. Budget accordingly.
π― 2. 3907.99.20.00 β General Polyester Primary Product
| Item | Content |
|---|---|
| Base Tariff | 0.0% |
| Section 301 Tariff | +25.0% |
| "122 Clause" Tariff | +10.0% |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Exemption | β Not Eligible |
| Legal Path | USITC:3907.99.20.00 β Section 301 β 122 Clause |
π Note:
- Same tariff structure as unsaturated polyester.
- Ensure the Technical Data Sheet (TDS) clearly states "Polyester" and not "Polystyrene" or "Polyether" to avoid misclassification penalties.
β οΈ Related Codes for Comparison (Do Not Confuse)
| HS Code | Product | Total Tax | Why Different? |
|---|---|---|---|
3903.11.00.00 / 3903.19.00.00 |
Polystyrene | 41.5% | Base rate is 6.5% (not 0%), plus 25% + 10%. |
3907.21.00.00 |
Polyether | 41.5% | Base rate is 6.5%, plus 25% + 10%. |
π΄ Critical Warning:
- If you misdeclare Polyester as Polystyrene or Polyether, you may face 41.5% tax instead of 35%.
- Conversely, if you misdeclare Polystyrene as Polyester, you risk underpayment and potential fines.
- Chemical composition matters! Provide MSDS (Material Safety Data Sheet) and GC/MS (Gas Chromatography-Mass Spectrometry) reports to prove identity.
π οΈ IV. Customs Clearance Practical Advice (Avoid Pitfalls)
β 1. Required Documentation Checklist
| Document | Required? | Purpose |
|---|---|---|
| β MSDS / SDS | βοΈ | Proves chemical composition and safety hazards. |
| β COA (Certificate of Analysis) | βοΈ | Confirms "High Purity" and chemical structure (e.g., unsaturated vs. saturated). |
| β Technical Data Sheet (TDS) | βοΈ | Details physical form (granules, liquid, powder) and application. |
| β Commercial Invoice | βοΈ | Must clearly state "Polyester Resin Raw Material" and HS Code. |
| β Bill of Lading / Air Waybill | βοΈ | Standard shipping documents. |
| β Import License (If Applicable) | βοΈ | Some chemical precursors may require EPA or other agency reviews. |
| β Proof of Origin | βοΈ | To confirm Chinese origin and apply correct additional tariffs. |
β 2. Declaration Strategy
π₯ Golden Rule: "Accurate Chemical Name, Clear Composition, Correct HS Code!"
| Scenario | Correct Declaration | Mistake to Avoid |
|---|---|---|
| Unsaturated Polyester | "Unsaturated Polyester Resin, Primary Shape, High Purity" | Calling it "Polystyrene" or "Plastic Pellets" |
| General Polyester | "Polyester Resin Raw Material, Primary Form" | Using vague terms like "Chemical Raw Material" |
| Mixed Shipment | Separate line items for Polyester, Polystyrene, Polyether | Combining into one line β High risk of audit |
| High Purity | Specify purity level (e.g., >99%) in description | Ignoring purity β May affect classification |
β 3. Special Cases & Tips
| Situation | Recommendation |
|---|---|
| High Purity Claim | Provide COA showing purity >99%. Higher purity may not change HS code but supports value declaration. |
| Liquid vs. Solid | Specify state (granules, pellets, liquid). Some subcodes differentiate by form. |
| Chemical Reactions | If the resin is intended for immediate polymerization, still declare as raw material. |
| Origin Labeling | Clearly mark "Made in China" to avoid origin fraud allegations. |
π V. Global Market Comparison (2026)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Required | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3907.91.20.00 or 3907.99.20.00 |
35.0% | EPA TSCA, MSDS | High additional tariffs; strict chemical reporting. |
| π¨π³ China | 3907.91.00.00 |
Varies (Check Local) | REACH (if exporting from China) | Domestic trade may have different rates. |
| πͺπΊ EU | 3907.91.00 |
~6.5% | REACH Registration | No Section 301 tariffs; REACH compliance is critical. |
| π¦πΊ Australia | 3907.91.00 |
~5% | AICIS | Lower tariffs but strict chemical inventory checks. |
| π―π΅ Japan | 3907.91.00 |
~6.0% | Chemical Substances Control Law | Moderate tariffs; focus on safety data. |
π Conclusion:
- USA has the highest effective tariff (35%) due to additional clauses.
- EU/Asia have lower base tariffs but require chemical compliance (REACH, AICIS, etc.).
- Strategy: For US imports, budget for 35% tax. Consider supply chain diversification if costs are prohibitive.
π VI. Common Errors & Pitfalls (Lessons Learned)
β Mistake 1: Declaring "Polyester" as "Plastic Pellets"
π Result: Unclear classification β Delays, potential reclassification to higher duty rate.
β Mistake 2: Confusing Polyester with Polystyrene
π Result: Wrong HS code β 41.5% vs 35% tax difference + potential penalties.
β Mistake 3: Omitting "High Purity" or Chemical Spec in Description
π Result: Customs may reject declaration or request additional testing β Delays.
β Mistake 4: Not Providing MSDS/COA
π Result: Customs cannot verify chemical identity β Hold shipment for inspection.
β Correct Practice:
"High Purity Unsaturated Polyester Resin, Primary Shape, Granules, Purity >99%, Model XYZ, MSDS Available"
π― VII. Conclusion: Professional Declaration, Cost Control, Efficiency!
π― Remember the Key Takeaway:
πΉ "Polyester is 35%, Polystyrene is 41.5% β Know your chemistry!"
πΉ "Documentation is key: MSDS, COA, TDS β Avoid delays with proof!"
πΉ "HS Code 3907.91/99 β The right choice for polyester raw materials!"
π Pro Tip:
If your product is highly specialized (e.g., epoxy-modified polyester), consult a customs broker for Advance Ruling to ensure correct classification.
For US imports, budget for 35% total tax and factor this into your pricing strategy.
π£ Immediate Action:
π Contact a Licensed Customs Broker
π Prepare MSDS, COA, and TDS
π Verify HS Code:3907.91.20.00or3907.99.20.00
π Ensure smooth customs clearance and cost efficiency!
β¨ Professional Clearance Starts with Accurate Classification!
πΌ Every Dollar Saved is a Dollar Earned β Get the HS Code Right!
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.