Special Polymer Resin
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3910000000 | 38.0% | CN | US | 官方文档 |
| 3907995050 | 41.5% | CN | US | 官方文档 |
| 3907290000 | 41.5% | CN | US | 官方文档 |
| 3911909110 | 41.5% | CN | US | 官方文档 |
| 3911909150 | 41.5% | CN | US | 官方文档 |
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AI分析
🧪 Special Polymer Resin (Special Polymer Materials)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: What Are "Special Polymer Resins"?
Special Polymer Resins refer to primary shape polymeric materials with unique chemical structures or properties, often falling under silicones, polyesters, polyethers, or specific resins. In international trade, precise classification is critical because these materials are subject to high additional tariffs (Section 301, Section 122, IEEPA) if misdeclared or imported from China.
⚠️ Key Distinction Points:
- Silicone/Polysiloxane: If the polymer backbone contains silicon-oxygen bonds → Classify under 3910.
- Polyester/Polyether/Resin: If the polymer is carbon-based (e.g., PET, PBT, PEG) → Classify under 3907 or 3911.
- "Primary Shape" Requirement: Must be in primary forms (granules, pellets, powder, liquid) for further manufacturing. If pre-formed into parts, it may fall under different chapters.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Key Chemical Structure |
|---|---|---|---|
3910.00.00.00 |
Silicones in primary forms | Silicone fluids, sealants, resins, rubbers | Si-O backbone |
3907.99.50.50 |
Other polymers (Polyester type) | PET, PBT, or other complex polyesters | Ester linkages |
3907.29.00.00 |
Other polyethers | PEG, PPG, or other polyether polymers | Ether linkages |
3911.90.91.10 |
Specific chemical nature polymers (e.g., Resins) | Specialty resins not elsewhere specified | Complex organic structures |
3911.90.91.50 |
Resins and other primary products | General specialty resins, modified polymers | Various organic backbones |
🔍 Key Reminder:
- Silicones (3910) have a lower total tariff rate (38.0%) compared to other special polymers (41.5%).
- Non-Silicone Polymers (3907,3911) are subject to higher base duties (6.5%) plus the same additional tariffs.
- "Special Polymer" is a broad term; customs requires specific chemical identification to assign the correct subheading.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Additional Duties)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: Current trade policy (Section 301 & IEEPA)
🎯 1. 3910.00.00.00 —— Silicones in Primary Forms
| Item | Content |
|---|---|
| Base Duty Rate | 3.0% (Ad Valorem) |
| Additional Duty (Section 301) | +25% |
| Section 122 Duty | +10% |
| Total Tax Rate | 38.0% |
| Tax Calculation | CIF Value × 38.0% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | HTSUS:3910.00.00.00 → USITC:Section 301 → IEEPA:Section 122 |
📌 Explanation:
- Base Duty (3.0%): Standard MFN rate for silicones.
- Section 301 (25%): USITC tariff on Chinese-origin silicones.
- Section 122 (10%): Additional duty for certain Chinese goods under IEEPA.
- Total: 38.0% is the highest applicable rate for silicone polymers.
🎯 2. 3907.99.50.50 —— Other Polymers (Polyester Type)
| Item | Content |
|---|---|
| Base Duty Rate | 6.5% |
| Additional Duty (Section 301) | +25% |
| Section 122 Duty | +10% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | HTSUS:3907.99.50.50 → USITC:Section 301 → IEEPA:Section 122 |
📌 Note:
- Polyester-based special polymers face a higher base duty (6.5%) than silicones.
- Same additional tariffs apply, resulting in a 41.5% total rate.
- Commonly used in engineering plastics, fibers, and films.
🎯 3. 3907.29.00.00 —— Other Polyether Polymers
| Item | Content |
|---|---|
| Base Duty Rate | 6.5% |
| Additional Duty (Section 301) | +25% |
| Section 122 Duty | +10% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | HTSUS:3907.29.00.00 → USITC:Section 301 → IEEPA:Section 122 |
📌 Note:
- Polyethers (e.g., PEG, PPG) are classified here if not elsewhere specified.
- Same high tariff burden as polyesters.
- Often used in surfactants, lubricants, and polyurethane precursors.
🎯 4. 3911.90.91.10 & 3911.90.91.50 —— Specific Chemical Nature Polymers / Resins
| Item | Content |
|---|---|
| Base Duty Rate | 6.5% |
| Additional Duty (Section 301) | +25% |
| Section 122 Duty | +10% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | HTSUS:3911.90.91.10/50 → USITC:Section 301 → IEEPA:Section 122 |
📌 Note:
- These HS codes cover "other" special polymers/resins not listed in 3901-3907.
- Includes specialty resins for adhesives, coatings, and electronic materials.
- Requires detailed chemical documentation to prove "special" nature.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Required Documentation Checklist (Essential)
| Document | Must Provide | Purpose |
|---|---|---|
| ✅ Certificate of Analysis (COA) | ✔️ | Proves chemical composition (silicone vs. polyester vs. polyether) |
| ✅ Material Safety Data Sheet (MSDS) | ✔️ | Confirms physical form and hazards |
| ✅ Product Specification Sheet | ✔️ | Details molecular weight, viscosity, and intended use |
| ✅ Commercial Invoice | ✔️ | Must clearly state "Special Polymer Resin" and HS Code |
| ✅ Bill of Lading | ✔️ | Consistent with invoice description |
| ✅ Origin Certificate (if applicable) | ✔️ | To claim preferential rates (if not from China) |
✅ 2. Declaration Tips (Critical Mnemonic)
🔥 "Silicones Low, Others High; Base Duty Matters!"
| Scenario | Correct Declaration | Incorrect Practice |
|---|---|---|
| Silicone Resin/Polymer | 3910.00.00.00 (38.0%) |
Misclassified as 3907 (41.5%) → Extra 3.5% cost |
| Polyester Granules | 3907.99.50.50 (41.5%) |
Misclassified as 3910 → Audit Risk & Penalties |
| Polyether Liquid | 3907.29.00.00 (41.5%) |
Misclassified as "General Plastic" → Underpayment |
| Specialty Resin (Unclear) | 3911.90.91.10 (41.5%) |
Generic "Plastic Resin" → Customs Delay |
📌 Strategy:
- If your product is silicone-based, ensure it is classified under 3910 to save 3.5% in total taxes.
- For non-silicone polymers, prepare detailed chemical analysis to justify the specific subheading.
- Never declare "Special Polymer" without a precise HS Code; customs will assign a default code with higher scrutiny.
✅ 3. Special Cases Handling
| Scenario | Handling Advice |
|---|---|
| Mixed Shipments | Separate silicone from polyester/polyether in customs declaration to avoid confusion |
| Pre-Formed Parts | If already shaped, do not use these HS codes; check Chapter 39 or 85 |
| OEM/Contract Manufacturing | Provide customer PO + material specs to prove "primary shape" status |
| Origin Non-China | If from Vietnam, India, etc., verify if Section 301/122 still applies (often no) |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Required | Notes |
|---|---|---|---|---|
| 🇺🇸 United States | 3910.00.00.00 (Silicone)3907/3911 (Others) |
38.0% (Silicone) 41.5% (Others) |
FDA (if food contact) RoHS (if electronic) |
Highest tariffs globally due to Section 301 & 122 |
| 🇨🇳 China (Import) | 3910.00.00.00 |
~3-6% | CCC (if applicable) | No additional tariffs |
| 🇪🇺 European Union | 3910.00.00 / 3907 |
0-4% (if under duty-free) | REACH Compliance | No Section 301; strict chemical registration |
| 🇬🇧 United Kingdom | 3910.00.00 |
0-4% | UKCA Marking | Post-Brexit rules apply; similar to EU |
| 🇯🇵 Japan | 3910.00.00 |
3-5% | JIS Standards | Moderate tariffs; stable trade policy |
📌 Conclusion:
- USA is the most expensive market for special polymer resins due to 38-41.5% total tariffs.
- Silicones (3910) are slightly cheaper than other polymers (3907/3911).
- For non-US markets, focus on REACH (EU) and chemical safety compliance.
📌 VI. Common Mistakes & Pitfall Guide (Lessons Learned)
❌ Mistake 1: Declaring all polymers as 3907 regardless of chemical structure
👉 Consequence: If actually silicone, you overpay 3.5%. If actually 3911, you risk classification error audits.
❌ Mistake 2: Using generic terms like "Plastic Pellets" on the invoice
👉 Consequence: Customs will detain for clarification, causing delay fees and storage costs.
❌ Mistake 3: Ignoring Section 122 and Section 301 applicability
👉 Consequence: Underpayment of duties → Penalties + Back Taxes + Interest.
❌ Mistake 4: Not providing COA/MSDS for "Special" polymers
👉 Consequence: Customs may reclassify to a higher-duty "catch-all" category.
✅ Correct Practice:
"Silicone Resin, Primary Shape, CAS No. 63148-62-9, for Adhesive Application, Model XYZ"
vs.
"Polyester Polymer Granules, CAS No. 25038-59-9, Engineering Plastic, Model ABC"
🎯 VII. Conclusion: Precision in Classification Saves Money!
🎯 Remember the Mnemonic:
🔹 "Silicone 38, Others 41; Base Duty is 3 or 6, Add 35 More!"
🔹 "HS Code Determines Tax; Misclassification Means Penalty!"
📌 Pro Tip:
If your special polymer resin is not from China (e.g., from South Korea, Germany, USA), Section 301 and 122 duties do NOT apply. Verify origin carefully to avoid unnecessary high tariffs.
Always apply for Pre-Ruling (Advance Classification) from CBP if the chemical structure is complex.
📣 Immediate Action:
📞 Contact your customs broker + Provide COA/MSDS + Confirm Origin
🚀 Ensure your special polymer resins clear customs smoothly, efficiently, and cost-effectively!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every percentage point of tariff difference impacts your bottom line!
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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。