Corrosion Resistant Polyester Resin Raw Material
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3911904500 | 40.8% | CN | US | 官方文档 |
| 3907915000 | 41.5% | CN | US | 官方文档 |
| 3907995050 | 41.5% | CN | US | 官方文档 |
| 3208100000 | 38.7% | CN | US | 官方文档 |
| 3208900000 | 38.2% | CN | US | 官方文档 |
商品图片
AI分析
🏭 Polyester Resin Corrosion Resistant Raw Material: HS Code Guide & Customs Strategy
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: What Exactly is "Corrosion Resistant Polyester Resin"?
Polyester resin, specifically formulated for corrosion resistance, is a thermosetting polymer widely used in fiberglass-reinforced plastics (FRP), chemical storage tanks, pipelines, and industrial coatings. In international trade, the classification of this raw material depends heavily on its physical state (primary shape vs. prepared product) and its chemical composition (based on specific polymers).
Key Distinction Points: * Primary State (Chapters 39): If the resin is in its raw, unpolymerized, or simply polycondensed form (pellets, flakes, liquids) without specific functional additives for direct painting, it falls under Chapter 39 (Plastics and Articles Thereof). * Prepared/Coating State (Chapter 32): If the resin is already mixed with solvents, catalysts, or other agents to form a ready-to-use paint, varnish, or coating medium, it may fall under Chapter 32 (Tanning or Dye Extracts; Tannins and Their Derivatives; Dyestuffs, Pigments and Other Colouring Matter; Paints and Varnishes).
⚠️ Critical Clarification:
- "Corrosion resistance" is a performance characteristic, not a chemical definition. Customs classifies based on composition and form, not end-use.
- If it’s a pure polymer precursor → Chapter 39.
- If it’s a prepared paint/coating base → Chapter 32.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Classification Logic | Tax Detail Breakdown |
|---|---|---|---|
| 3911.90.45.00 | Polyester resins in primary forms, not elsewhere specified | "兜底类目" (Catch-all for Primary Resins): Fits the logic of "unsaturated polyester resins" in primary form, not covered by more specific 3907 subheadings for certain modified types. | Total Tax: 40.8% • Base Tariff: 5.8% • Section 301 (25%): Yes • Section 301 (10% - 122 List): Yes |
| 3907.91.50.00 | Other unsaturated polyester resins in primary forms | "初级产品特征" (Primary Product Characteristics): Directly classified as "unsaturated polyester" (a subset of acrylic polymers) in primary forms. This is the most common classification for standard raw resin. | Total Tax: 41.5% • Base Tariff: 6.5% • Section 301 (25%): Yes • Section 301 (10% - 122 List): Yes |
| 3907.99.50.50 | Other unsaturated polyester resins in other forms | "其他聚酯分类逻辑" (Other Polyester Logic): Applies if the resin is in a form not explicitly covered by 3907.91 (e.g., specific blends or secondary forms not defined as "primary"). | Total Tax: 41.5% • Base Tariff: 6.5% • Section 301 (25%): Yes • Section 301 (10% - 122 List): Yes |
| 3208.10.00.00 | Coatings based on unsaturated polyester resins | "基于聚酯的聚合物属性" (Polymer-Based Attribute): Used if the product is a prepared coating (mixed with solvents/additives) where polyester is the main binder. Not a raw material, but a formulated product. | Total Tax: 38.7% • Base Tariff: 3.7% • Section 301 (25%): Yes • Section 301 (10% - 122 List): Yes |
| 3208.90.00.00 | Coatings based on other synthetic polymers | "非水介质成分类目" (Non-Aqueous Component Category): A broader catch-all for prepared coatings where the synthetic polymer binder is not specified as acrylic or vinyl in 3208.10. Less precise for pure polyester but applicable if mixed. | Total Tax: 38.2% • Base Tariff: 3.2% • Section 301 (25%): Yes • Section 301 (10% - 122 List): Yes |
🔍 Key Insight:
- Raw Resin (Ch39) typically incurs higher total tax (40.8%–41.5%) due to higher base tariffs, even with similar Section 301 additions.
- Prepared Coatings (Ch32) have lower base tariffs (3.2%–3.7%) but still carry heavy Section 301 penalties, resulting in slightly lower total tax (38.2%–38.7%).
- Misclassification Risk: Declaring raw resin as a coating (or vice versa) can lead to customs audits, penalties, and delayed releases.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: November 10, 2025 onwards (including subsequent imports)
🎯 1. 3911.90.45.00 — Polyester Resins (Primary Form, Catch-All)
| Item | Details |
|---|---|
| Base Tariff | 5.8% (ad valorem) |
| Section 301 Surtax | +25% (USITC Footnote 9903.33.01) |
| Section 122 Surtax | +10% (Targeted Chinese products, effective Nov 10, 2025) |
| Total Rate | 40.8% |
| Calculation | CIF Value × 40.8% |
| De Minimis Eligibility | ❌ No (Not eligible for Section 321 de minimis exemption) |
| Legal Basis Path | USITC:3911.90.45.00 → FOOTNOTE:9903.33.01 → IEEPA:9903.01.25 |
📌 Explanation:
- The 25% surtax applies to all goods under HTS 3911.90.45.00 per Section 301.
- The 10% surtax is part of the updated "List 122" measures targeting specific Chinese industrial chemicals.
- Total burden: 40.8%. This is a high-cost classification.
🎯 2. 3907.91.50.00 — Unsaturated Polyester Resins (Primary Form)
| Item | Details |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Surtax | +25% |
| Section 122 Surtax | +10% |
| Total Rate | 41.5% |
| Calculation | CIF Value × 41.5% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | USITC:3907.91.50.00 → FOOTNOTE:9903.33.01 → IEEPA:9903.01.25 |
📌 Note:
- This is the standard classification for raw unsaturated polyester resins.
- Even slightly higher base tariff (6.5% vs. 5.8%) makes it the most expensive option in this list.
- Applies to pellets, flakes, or liquid monomers/polyesters intended for further polymerization.
🎯 3. 3907.99.50.50 — Other Unsaturated Polyester Resins
| Item | Details |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Surtax | +25% |
| Section 122 Surtax | +10% |
| Total Rate | 41.5% |
| Calculation | CIF Value × 41.5% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | USITC:3907.99.50.50 → FOOTNOTE:9903.33.01 → IEEPA:9903.01.25 |
📌 Note:
- Similar to 3907.91.50.00, but for resin forms not explicitly covered in 3907.91.
- Same tax burden. Use only if 3907.91.50.00 is not technically accurate.
🎯 4. 3208.10.00.00 — Coatings Based on Unsaturated Polyester Resins
| Item | Details |
|---|---|
| Base Tariff | 3.7% |
| Section 301 Surtax | +25% |
| Section 122 Surtax | +10% |
| Total Rate | 38.7% |
| Calculation | CIF Value × 38.7% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | USITC:3208.10.00.00 → FOOTNOTE:9903.33.01 → IEEPA:9903.01.25 |
📌 Note:
- Applies if the product is a prepared coating (e.g., gel coat, marine coating) with solvents/catalysts.
- Lower total tax than raw resin due to lower base tariff.
- Must prove it’s a coating, not raw resin.
🎯 5. 3208.90.00.00 — Other Coatings Based on Synthetic Polymers
| Item | Details |
|---|---|
| Base Tariff | 3.2% |
| Section 301 Surtax | +25% |
| Section 122 Surtax | +10% |
| Total Rate | 38.2% |
| Calculation | CIF Value × 38.2% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | USITC:3208.90.00.00 → FOOTNOTE:9903.33.01 → IEEPA:9903.01.25 |
📌 Note:
- The lowest total tax in this list.
- Use only if the coating doesn’t fit 3208.10.00.00 precisely.
- High risk of misclassification if declared as raw resin.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance)
✅ 1. Required Documentation Checklist (All Mandatory)
| Document | Required | Notes |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must detail chemical composition, polymerization state, and intended use. |
| ✅ MSDS (Material Safety Data Sheet) | ✔️ | Confirms chemical nature; helps distinguish between raw resin and prepared coating. |
| ✅ Product Photos (Clear & Labeled) | ✔️ | Show packaging, labeling, and physical form (pellets, liquid, etc.). |
| ✅ Third-Party Test Report | ✔️ | Certify corrosion resistance properties, but note: performance does not dictate HS code. |
| ✅ Commercial Invoice | ✔️ | Must clearly state: "Unsaturated Polyester Resin" or "Coating Based on Polyester Resin". |
| ✅ Bill of Lading | ✔️ | Ensure consistent description with invoice. |
| ✅ Certificate of Origin | ✔️ | Required for Section 301 determination. |
✅ 2. Declaration Tips (Key Mnemonics)
🔥 "Form Dictates Code, Not Function. Raw = Ch39, Coated = Ch32."
| Scenario | Correct HS Code | Wrong Action |
|---|---|---|
| Raw polyester resin (pellets/liquid) | 3907.91.50.00 |
Declaring as coating → 38.2% (but audit risk!) |
| Prepared marine coating (with solvents) | 3208.10.00.00 |
Declaring as raw resin → 41.5% (overpayment) |
| Mixed with catalysts for immediate use | Likely 3208.10.00.00 |
Declaring as raw resin → Audit risk |
| Unpolymerized monomers | 3907.91.50.00 |
Declaring as 3907.99.50.50 → No benefit |
✅ 3. Special Case Handling
| Situation | Handling Advice |
|---|---|
| OEM Custom Resin | Provide customer specs + chemical structure to justify 3907.91.50.00. |
| Resin with Catalyst Pre-Mixed | Likely Coating (3208.10.00.00). Declare as such to save ~3.3% tax, but provide proof of mixing. |
| Gel Coat for Boat Hulls | Definitely Coating (3208.10.00.00). Do not declare as raw resin. |
| Raw Resin for Fabrication | Clearly declare as "Unsaturated Polyester Resin, Primary Form" → 3907.91.50.00. |
🌍 V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Total Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 United States | 3907.91.50.00 (Raw) / 3208.10.00.00 (Coating) |
41.5% (Raw) / 38.7% (Coating) | None specific | Highest duty burden globally. Section 301 + 122 List applies. |
| 🇨🇳 China | 3907.91.00.00 |
~5% | CCC (if applicable) | No Section 301. Much cheaper if importing into China. |
| 🇪🇺 European Union | 3907.91.00 |
~6.5% | REACH Compliance | No 25% surtax. Much more favorable than US. |
| 🇬🇧 United Kingdom | 3907.91.00 |
~6.5% | UKCA/REACH | Post-Brexit rules apply, but no US-style surtax. |
| 🇯🇵 Japan | 3907.91.00 |
~6.0% | JIS Standards | Moderate duty, no major surtaxes. |
📌 Conclusion:
- The US market is the most expensive for polyester resin imports from China due to Section 301 (25%) and Section 122 (10%) surtaxes.
- EU and Japan offer significantly lower total tariffs (~6–7%), making them more attractive for cost-sensitive supply chains.
- Consider供应链 diversification: If targeting the US, explore sourcing from non-China origins to avoid surtaxes.
📌 VI. Common Mistakes & Pitfall Avoidance (Lessons Learned)
❌ Mistake 1: Declaring raw resin as a "coating" to save tax
👉 Consequence: Customs audit, penalty, and potential seizure if proof of mixing/coating formulation is lacking.
❌ Mistake 2: Declaring a pre-mixed coating as "raw resin"
👉 Consequence: Overpayment of ~3.3% tax, plus potential penalties for misdeclaration.
❌ Mistake 3: Ignoring the "122 List" surtax
👉 Consequence: Failure to include the 10% surtax leads to underpayment and interest/penalties.
❌ Mistake 4: Using vague descriptions like "Chemical Resin"
👉 Consequence: Customs may classify under a higher tariff or demand detailed chemical analysis.
✅ Best Practice:
"Unsaturated Polyester Resin, Primary Form, Unpolymerized, for FRP Fabrication, No Solvents Added, Model XYZ, MSDS Available."
🎯 VII. Conclusion: Precise Classification Saves Money
🎯 Remember the Golden Rule:
🔹 "Form Dictates Code: Raw = Ch39 (40.8–41.5%), Coated = Ch32 (38.2–38.7%)."
🔹 "Section 301 + 122 List = +35% surtax on top. Always declare accurately."
🔹 "Performance (corrosion resistance) does NOT determine HS code. Composition and form do."
📌 Pro Tip:
If your product qualifies as a prepared coating (Ch32), you can save ~3.3% in total tax compared to raw resin (Ch39). However, you must provide evidence of formulation (MSDS, specs showing solvents/additives).
If it’s raw resin, stick to 3907.91.50.00 to avoid audit risks.
📣 Immediate Action:
📞 Engage a licensed customs broker + Provide MSDS + Product Specs + Apply for Advance Ruling (CBP Ruling) if uncertain.
🚀 Ensure smooth clearance, avoid penalties, and optimize your landed cost.
✨ Professional Classification Starts with Precision!
💼 Every percent saved in duty is pure profit!
用户评价
关于 HS 编码归类
协调制度（HS）是由世界海关组织（WCO）制定的国际贸易商品分类标准。全球 200 多个国家采用 HS 系统作为海关关税、贸易统计和进出口监管的基础。
每个 HS 编码遵循以下层级结构：
- 章（2 位）——商品大类（例如：第 84 章：机器和机械设备）
- 品目（4 位）——章内的更具体分类
- 子目（6 位）——国际通用细分，所有 WCO 成员国统一使用
- 本国细分（8-10 位）——各国自行扩展的细分编码，如美国 HTSUS 10 位编码
正确的 HS 编码归类对于顺利通关、准确缴纳关税和遵守贸易法规至关重要。错误归类可能导致海关延误、多缴关税或罚款。
从CN进口到US时，适用的关税税率可能包括：
- 最惠国（MFN）税率——适用于 WTO 成员国的标准关税税率
- 普通税率——适用于无贸易协定国家
- 贸易救济关税——附加关税，如 301 条款（反倾销）、232 条款（国家安全）或反补贴税
本页内容仅供参考。如需正式归类，请咨询当地海关或持牌报关代理。