聚醚树脂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3907210000 | 41.5% | CN | US | Official Doc |
| 3907290000 | 41.5% | CN | US | Official Doc |
| 3907300000 | 41.1% | CN | US | Official Doc |
| 3911904500 | 40.8% | CN | US | Official Doc |
| 3911902500 | 41.1% | CN | US | Official Doc |
AI Analysis
🧪 Polyether Resins (聚醚树脂)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Entry Strategy
📌 I. Product Definition & Classification: Do You Really Understand "Polyether Resins"?
Polyether resins are a class of polymers characterized by ether linkages (-C-O-C-) in their backbone. In international trade, they are primarily classified under Chapter 39 (Plastics and Articles Thereof). The critical distinction lies in the chemical structure (aliphatic vs. aromatic) and physical form (primary shape vs. other).
1. Aliphatic Polyethers (聚醚树脂 - 原形/其他):
Typically poly(alkylene glycol)s. If they are in primary shapes (pellets, powders, liquids) for further polymerization, they fall under 3907.21 or 3907.29.
2. Aromatic Polyethers (聚芳基醚树脂):
Containing aromatic rings in the backbone (e.g., PPO/PPE derivatives). These often fall under 3911 (Other resins) if they are modified or specific aromatic variants, depending on precise chemical composition definitions in the 2026 tariff book.
⚠️ Key Distinction Point:
- If it is a standard aliphatic polyether in primary form → 3907.2x
- If it is a polyaryl ether (aromatic) or a specific modified resin → 3911.90
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Cross-Reference)
| HS Code | Product Description | Application Scenario | Taxable Category |
|---|---|---|---|
3907.21.00.00 |
Polyethers in primary forms, matching "Other polyethers" category | Standard aliphatic polyether pellets/powders for further processing | Aliphatic Polyether |
3907.29.00.00 |
Polyethers, fits "Other polyethers" material definition, no shape/use conflict | Non-primary forms or other aliphatic polyethers not elsewhere specified | Aliphatic Polyether |
3907.30.00.00 |
Polyarylene ethers (Polyaryl ethers), categorized under epoxy-related polyethers in primary forms | Specific aromatic polyethers defined as primary shape polyethers | Aromatic Polyether |
3911.90.45.00 |
Polyaryl ether resins containing aromatic monomer units, matching specific material traits | Modified aromatic polyethers with specific aromatic content | Aromatic Resin |
3911.90.25.00 |
Polyaryl ether resins, thermoplastic products derived from aromatic monomers, matching petroleum resin features | Thermoplastic aromatic polyethers behaving like petroleum resins | Aromatic Resin |
🔍 Key Reminder:
- 3907 covers standard polyethers (aliphatic).
- 3911 covers "Other resins," which includes specific polyaryl ethers (aromatic) that don't fit the general polyether definition in 3907 or are treated as special resins.
- Misclassification between 3907 and 3911 can lead to discrepancies in duty calculation due to different base rates.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: Post-November 10, 2025 (including subsequent imports)
🎯 1. 3907.21.00.00 & 3907.29.00.00 —— Aliphatic Polyethers (Primary/Other)
| Item | Content |
|---|---|
| Base Duty Rate | 6.5% (ad valorem) |
| Section 301 Surtax | +25.0% (USITC Footnote for Chinese goods) |
| Section 122 Surtax | +10.0% (Specific policy add-on for this category) |
| Total Duty Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Eligibility | ❌ Not Eligible (Denied for Section 301 goods) |
| Legal Basis Path | USITC:3907.21.00.00 → Section 301: +25% → Section 122: +10% |
📌 Explanation:
- Base 6.5%: Standard MFN duty for polyethers.
- 25% Section 301: The major "Trump Tariff" add-on for Chinese plastics.
- 10% Section 122: Additional specific duty applicable to these chemical inputs.
- Total 41.5%: High burden. Must be factored into landing cost.
🎯 2. 3907.30.00.00 —— Polyarylene Ethers (Primary Forms)
| Item | Content |
|---|---|
| Base Duty Rate | 6.1% (ad valorem) |
| Section 301 Surtax | +25.0% |
| Section 122 Surtax | +10.0% |
| Total Duty Rate | 41.1% |
| Tax Calculation | CIF Value × 41.1% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Basis Path | USITC:3907.30.00.00 → Section 301: +25% → Section 122: +10% |
📌 Note:
- Slightly lower base rate (6.1% vs 6.5%) due to specific sub-heading for polyarylene ethers.
- Still subject to the full surtax package.
🎯 3. 3911.90.45.00 & 3911.90.25.00 —— Polyaryl Ether Resins (Aromatic/Specific)
| Item | Content |
|---|---|
| Base Duty Rate | 5.8% (3911.90.45.00) / 6.1% (3911.90.25.00) |
| Section 301 Surtax | +25.0% |
| Section 122 Surtax | +10.0% |
| Total Duty Rate | 40.8% (45) / 41.1% (25) |
| Tax Calculation | CIF Value × Total Rate |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Basis Path | USITC:3911.90.x.x → Section 301: +25% → Section 122: +10% |
📌 Note:
-3911.90.45.00offers the lowest total rate at 40.8% due to the 5.8% base.
- This classification is suitable for aromatic polyethers with specific monomer unit characteristics.
-3911.90.25.00is for thermoplastic aromatic variants resembling petroleum resins.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
✅ 1. Required Document Checklist (Missing Anything = Delay)
| Document | Required? | Explanation |
|---|---|---|
| ✅ Technical Data Sheet (TDS) | ✔️ | Must specify chemical structure (Aliphatic vs. Aromatic), molecular weight, and primary form. |
| ✅ Composition Analysis | ✔️ | Proof of "Polyether" vs. "Polyester" vs. "Epoxide". Critical for HS Code 3907 vs. 3907/3911. |
| ✅ Certificate of Origin | ✔️ | To confirm China origin and apply correct surtaxes. |
| ✅ Commercial Invoice | ✔️ | Must accurately describe goods as "Polyether Resin, Primary Form" or "Polyaryl Ether Resin". |
| ✅ Packing List | ✔️ | Weight and volume details. |
| ✅ Safety Data Sheet (SDS) | ✔️ | For customs health/safety review, though less critical for duty than TDS. |
✅ 2. Declaration Tips (Key Mantra)
🔥 “Structure Determines Code, Base Rate Matters, Surtaxes are Fixed!”
| Scenario | Correct Declaration | Wrong Approach |
|---|---|---|
| Standard Aliphatic Polyether (Pellets) | 3907.21.00.00 |
Misdeclare as 3911 → Higher scrutiny, potential re-classification |
| Aromatic Polyether (Specialized) | 3911.90.45.00 |
Misdeclare as 3907 → Incorrect tax base (6.5% vs 5.8%) |
| Liquid Polyether (Not Primary Shape) | 3907.29.00.00 |
Declare as 3907.21 (Primary) → Risk of penalty |
| Resin Mix/Compound | Check Composition | Assume single category → Complex duty calculation errors |
✅ 3. Special Cases Handling
| Situation | Handling Advice |
|---|---|
| Custom Synthesis | Provide detailed synthesis route to prove "Polyether" backbone. |
| Blends | If mixed with fillers, check if it remains "Resin" or becomes "Plastic Compound". |
| Free Zone Transshipment | No duty if staying in FZ, but duty triggers upon entry to US market. |
| Pre-Ruling Application | Strongly recommended for new chemical products to get binding HS Code determination. |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Base Duty | Surtaxes (China Origin) | Total Duty | Notes |
|---|---|---|---|---|---|
| 🇺🇸 USA | 3907.21.00.00 / 3911.90.45.00 |
6.5% / 5.8% | +25% (301) + 10% (122) | 41.5% / 40.8% | High barrier. Verify Section 122 applicability. |
| 🇨🇳 China | 3907.21.00.00 |
6.5% | None | 6.5% | Import duty only. No surtaxes. |
| 🇪🇺 EU | 3907.21.00.00 |
6.5% | None (Usually) | 6.5% | Check for anti-dumping if applicable. |
| 🇬🇧 UK | 3907.21.00.00 |
6.5% | None | 6.5% | Post-Brexit rules apply. |
| 🇯🇵 Japan | 3907.21.00.00 |
6.0% | None | 6.0% | JETP/FTAs may apply if origin is Vietnam/Thailand. |
📌 Conclusion:
- USA is the most expensive market for these resins due to cumulative surtaxes (35% total add-on).
- EU and Japan remain competitive with low base duties.
- Supply Chain Strategy: Consider sourcing from Vietnam, Thailand, or Malaysia to avoid US Section 301/122 tariffs, provided the origin rules are met.
📌 VI. Common Errors & Pitfall Guide (Blood Lessons)
❌ Mistake 1: Confusing "Polyether" (ether linkages) with "Polyester" (ester linkages).
👉 Consequence: Wrong HS Code (3907 vs 3907/3903). Potential duty difference + penalties.
❌ Mistake 2: Declaring "Resin" without specifying "Primary Form" vs. "Other Forms".
👉 Consequence: Misuse of 3907.21 (Primary) vs 3907.29 (Other). Customs may seize or demand re-declaration.
❌ Mistake 3: Ignoring "Aromatic" vs. "Aliphatic" distinction.
👉 Consequence: 3907 (Aliphatic) vs 3911 (Aromatic). Different base rates (6.5% vs 5.8%).
❌ Mistake 4: Assuming De Minimis (Section 321) applies to low-value samples.
👉 Consequence: Denied. Section 301 goods over $800 are still subject to duty if not explicitly exempted (which these are not).
✅ Correct Practice:
"Polyether Resin, Aliphatic, Primary Form, Pellets, CAS Number XXXX-XX-X, For Polymerization Use Only"
🎯 VII. Conclusion: Precision in Classification Saves Money!
🎯 Remember the Mantra:
🔹 "Aliphatic in 3907, Aromatic in 3911."
🔹 "Base Rate Matters, Surtaxes are the Killer."
🔹 "De Minimis is Dead for China-Origin Plastics."
🔹 "Total Duty = Base + 35%, So Think Twice Before Shipping!"
📌 Pro Tip:
If your polyether resins are sourced from Vietnam, Mexico, or Thailand, you may qualify for FTA Benefits or Exemptions from Section 301/122.
Recommendation:
1. Apply for a US Customs Ruling on the specific HS Code.
2. Verify Origin Rules for any third-country transshipment.
3. Calculate Landed Cost with 40%+ duty in mind for US-bound goods.
📣 Immediate Action:
📞 Contact a licensed customs broker + Provide TDS/CAS Number + Apply for Advance Ruling
🚀 Ensure your polyether resins clear customs smoothly, avoid costly delays, and protect your margins!
✨ Professional Clearance Starts with Precise Classification!
💼 Your Cost Every Time Should Be Accurately Calculated!
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) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — 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 — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — 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.