Polymer Casting Adhesive
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3901909000 | 41.5% | CN | US | 官方文档 |
| 3901905501 | 41.5% | CN | US | 官方文档 |
| 3903901000 | 41.5% | CN | US | 官方文档 |
| 3903905000 | 41.5% | CN | US | 官方文档 |
| 3506915000 | 37.1% | CN | US | 官方文档 |
商品图片
AI分析
🧪 Polymer Casting Adhesive (Polymer-Based Resins & Bonding Agents)
🌐 HS Code Reference & Customs Clearance Guide | 2024/2025 Tariff Structure | Professional Compliance Strategy
📌 I. Product Definition & Classification: Do You Really Know What "Polymer Casting Adhesive" Is?
"Polymer Casting Adhesive" is a broad industrial term that typically refers to synthetic resins, epoxy systems, acrylics, or vinyl polymers used for casting molds, bonding substrates, or structural adhesive applications. In international trade, the classification hinges on two critical factors: 1. Primary Polymer Material: Is it based on Ethylene (PE) or Styrene (PS)? 2. Form & Function: Is it in its primary shape (raw resin/granules) or is it a finished adhesive preparation?
⚠️ Key Classification Distinction:
- If the product is a raw polymer resin (e.g., polyethylene or polystyrene in primary forms like powders, granules, or liquids) intended for further manufacturing → It falls under Chapter 39.
- If the product is a prepared adhesive (mixed with fillers, solvents, or hardeners) for direct bonding/casting use → It may fall under Chapter 35 (Albuminoidal substances & modified starches, including adhesives), specifically subheading 3506.
📦 II. HS Code Classification Details (Latest Tariff Schedule)
Based on the provided data, here are the specific HS Codes and their logical mapping:
| HS Code | Summary Description | Basis for Classification | Key Characteristic |
|---|---|---|---|
3901.90.90.00 |
Ethylene Polymers, Primary Form | Based on polymer material and adhesive use; matches "Ethylene Polymer Primary Form". | Raw ethylene-based resin (e.g., PE). |
3901.90.55.01 |
Ethylene Copolymers, Primary Form | Based on polymer material; falls under "Ethylene Copolymer Primary Form" category. | Raw ethylene-copolymer resin (e.g., EVA, LLDPE). |
3903.90.10.00 |
Styrene Polymers, Primary Form | Based on styrene polymer material and primary form application for adhesives. | Raw polystyrene (PS) or styrene copolymer. |
3903.90.50.00 |
Styrene Polymers, Inferred Adhesive Use | Based on styrene polymer material and inferred adhesive application. | Another variant of raw styrene-based resin. |
3506.91.50.00 |
Prepared Adhesives, Other | Based on polymer material and adhesive use; judged under "Other" category. | Finished, mixed adhesive product (e.g., epoxy cast resin kit). |
🔍 Critical Insight:
- Raw Materials vs. Finished Goods: If you are importing bulk resin to mix into adhesives later, use 39xx codes. If you are importing a ready-to-use "casting adhesive" (mixed resin + hardener), use 3506.91.50.00.
- Chemical Basis: The distinction between3901(Ethylene) and3903(Styrene) is chemically significant. Misclassification can lead to seizures.
💰 III. 2024/2025 Tariff Rate Breakdown (Including Surtaxes)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Note: These rates apply to imports from China subject to Section 301 and IEEPA tariffs.
🎯 1. Raw Polymer Resins (3901.90.90.00, 3901.90.55.01, 3903.90.10.00, 3903.90.50.00)
| Item | Detail |
|---|---|
| Base Tariff | 6.5% (Ad Valorem) |
| Section 301 Surtax | +25.0% (Additional Duty on Chinese Goods) |
| 122 Clause Surtax | +10.0% (Specific Trade Measure) |
| Total Effective Rate | 41.5% |
| Calculation Basis | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Eligible (Deny De Minimis) |
| Legal Pathway | Base HTS → Section 301 Footnote → 122 Clause Adjustment |
📌 Explanation:
- These raw polymers are heavily taxed due to their dual classification: basic chemical imports (6.5%) + trade war surcharges (25% + 10%).
- Total of 41.5% makes raw polymer imports from China expensive. Ensure your supplier provides an accurate Material Safety Data Sheet (MSDS) and Certificate of Analysis (COA) proving it is indeed a primary form polymer.
🎯 2. Prepared Adhesives (3506.91.50.00)
| Item | Detail |
|---|---|
| Base Tariff | 2.1% (Ad Valorem) |
| Section 301 Surtax | +25.0% (Additional Duty on Chinese Goods) |
| 122 Clause Surtax | +10.0% (Specific Trade Measure) |
| Total Effective Rate | 37.1% |
| Calculation Basis | CIF Value × 37.1% |
| De Minimis Exemption | ❌ Not Eligible (Deny De Minimis) |
| Legal Pathway | HTS 3506.91 → Section 301 Footnote → 122 Clause Adjustment |
📌 Explanation:
- Prepared adhesives have a lower base rate (2.1%) but still incur the same surcharges (25% + 10%).
- Total of 37.1% is slightly lower than raw polymers (41.5%), but this code requires strict proof that the product is a prepared adhesive and not a raw polymer. Misclassifying a raw resin as an adhesive to save ~4% is a high-risk audit trigger.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance)
✅ 1. Documentation Checklist (Mandatory)
| Document | Required? | Purpose |
|---|---|---|
| ✅ Commercial Invoice | ✔️ | Must clearly state "Ethylene Polymer" or "Styrene Polymer" or "Prepared Adhesive". |
| ✅ Packing List | ✔️ | Must match invoice exactly. |
| ✅ MSDS (Material Safety Data Sheet) | ✔️ | CRITICAL: Proves chemical composition, hazard class, and physical state (liquid/solid). |
| ✅ Certificate of Origin (CO) | ✔️ | Required for tariff calculation; must indicate China origin. |
| ✅ Product Specification Sheet | ✔️ | Distinguishes between "Primary Form" (granules/powder) vs. "Prepared Adhesive" (mixed bottle). |
| ✅ FDA/FCC Certifications | (If Applicable) | If the adhesive is for food contact or electronic potting. |
✅ 2. Declaration Strategy (Key Mantra)
🔥 “Form Determines Code, Chemistry Determines Duty!”
| Scenario | Correct Declaration | Risk if Incorrect |
|---|---|---|
| Bulk Resin Granules | 3901.90.90.00 (Ethylene) or 3903.90.xxxx (Styrene) |
Declaring as "Adhesive" (3506) → Under-declaration of tax (41.5% vs 37.1%). Penalty! |
| Mixed Epoxy/Casting Resin | 3506.91.50.00 |
Declaring as "Raw Polymer" (39xx) → Over-declaration of tax (37.1% vs 41.5%). Overpayment! |
| Unclear Chemical Name | REFUSED | If invoice says "Glue" but MSDS says "Polyethylene", Customs will audit. |
✅ 3. Special Cases
| Situation | Advice |
|---|---|
| OEM Private Label | Ensure the supplier’s HS code matches your intended use. Do not change the chemical description. |
| Adhesive for Medical Use | If intended for medical casting, ensure FDA compliance documentation is attached to avoid hold-ups. |
| Hybrid Products | If the product contains both ethylene and styrene, it may be classified by the dominant polymer. Provide a detailed formulation breakdown. |
🌍 V. Global Market Comparison (2024/2025)
| Country/Region | Recommended HS Code | Base Tariff | Surtaxes (China) | Total Effective | Remarks |
|---|---|---|---|---|---|
| 🇺🇸 USA | 3901.90.90.00 / 3506.91.50.00 |
6.5% / 2.1% | +35% (25% + 10%) | 41.5% / 37.1% | High barrier. IEEPA applies. |
| 🇨🇳 China | 3901.90.90.00 / 3506.91.50.00 |
6.5% / 5.0% | 0% | 6.5% / 5.0% | No surtaxes. Import-friendly. |
| 🇪🇺 EU | 3901.90.90 / 3506.91.99 |
6.5% / 6.5% | 0% | 6.5% | No Section 301. CE/REACH required. |
| 🇬🇧 UK | 3901.90.90 / 3506.91.99 |
6.5% / 6.5% | 0% | 6.5% | Post-Brexit rules apply. |
📌 Conclusion:
- The US market is the most expensive for polymer adhesives from China due to the 35% total surcharge.
- EU and UK offer significantly lower total duties (6.5%) but have stricter chemical regulations (REACH).
- China is the cheapest, but this is for domestic consumption or re-export.
📌 VI. Common Mistakes & Pitfalls (Lessons Learned)
❌ Mistake 1: Calling "Epoxy Resin" a "Polymer" without specifying if it's primary form or prepared.
👉 Consequence: Customs may classify it under the higher-tariff raw polymer code if it’s unclear.
❌ Mistake 2: Ignoring the "122 Clause" surtax.
👉 Consequence: Underpayment of 10%. Customs will assess back-tariffs + interest + penalties.
❌ Mistake 3: Using "Adhesive" as the only description without chemical specifics.
👉 Consequence: Shipment held for inspection. MSDS required to determine HS Code.
❌ Mistake 4: Assuming "De Minimis" ($800) exemption applies.
👉 Consequence: Denied. Chemicals and polymers are explicitly excluded from de minimis relief for Chinese goods.
✅ Correct Approach:
"Ethylene Copolymer Resin, Primary Form, for Adhesive Manufacturing, Model XYZ, MSDS Attached"
OR
"Prepared Adhesive, Epoxy-Based, for Casting Applications, Model ABC, MSDS Attached"
🎯 VII. Conclusion: Precise Classification Saves Money!
🎯 Remember the Mantra:
🔹 "Raw Resin = 39xx (41.5%) / Prepared Glue = 3506 (37.1%)"
🔹 "Form is King, Chemistry is Queen, Surtax is Always Present!"
🔹 "4% difference is small, but Penalties are BIG!"
📌 Pro Tip:
If your product is sourced from Vietnam, Mexico, or Thailand, you may apply for IEEPA Exemptions or lower tariffs.
Recommend applying for a Binding Ruling with US Customs (CBP) to confirm the HS Code before shipment.
📣 Immediate Action:
📞 Consult a licensed customs broker.
📄 Prepare MSDS and Chemical Composition Statement.
🚀 Ensure your supplier declares the correct HS Code on the commercial invoice.
Clear customs smoothly, reduce costs, and boost profits!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every dollar of tariff savings is pure profit!
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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。