casting binder adhesive
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3506990000 | 37.1% | CN | US | 官方文档 |
| 3903905000 | 41.5% | CN | US | 官方文档 |
| 3901909000 | 41.5% | CN | US | 官方文档 |
| 3901905501 | 41.5% | CN | US | 官方文档 |
| 3506915000 | 37.1% | CN | US | 官方文档 |
商品图片
AI分析
🏗️ Casting Binder Adhesive (Polymer Casting Binders)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: What Exactly is a "Casting Binder"?
Casting Binder Adhesives are specialized polymers used in foundry processes to bind sand grains together for mold and core creation. In international trade, the classification is critical because the tax rate varies significantly depending on whether it is classified as a "Chemical Adhesive" or a "Plastic in Primary Forms."
⚠️ Key Distinction Point:
- If classified as Adhesive (Chapter 35): Lower base tariff (2.1%), Total ~37.1%.
- If classified as Plastic/Polymer (Chapter 39): Higher base tariff (6.5%), Total ~41.5%.
- Material Composition: All options involve Polymers (Styrene, Ethylene, Copolymers), but the legal description differs.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicability | Material/Form | Total Tax Rate |
|---|---|---|---|---|
3506.99.00.00 |
Casting Binder Adhesive classified as Adhesive | General polymer-based binders; no material conflict. | Polymer, Adhesive form | 37.1% |
3903.90.50.00 |
Styrene Polymers | Classified as Styrene Polymer; primary form application. | Primary Form, Styrene-based | 41.5% |
3901.90.90.00 |
Ethylene Polymers | Classified as Ethylene Polymer; primary form. | Primary Form, Ethylene-based | 41.5% |
3901.90.55.01 |
Ethylene Copolymers | Classified as Ethylene Copolymer; fits primary polymer category. | Primary Form, Copolymer | 41.5% |
3506.91.50.00 |
Other Adhesives (Polymer-based) | Classified as Adhesive; determined by "Other Categories." | Polymer, Adhesive form | 37.1% |
🔍 Critical Reminder:
- Adhesive Classification (3506 series) is generally more cost-effective (37.1% total) compared to Polymer Classification (3901/3903 series) (41.5% total).
- The difference lies in the Base Tariff: 2.1% (Adhesive) vs. 6.5% (Polymer).
- All items are subject to additional Section 301 and IEEPA tariffs.
💰 III. 2026 Latest Tariff Rate Detailed Breakdown (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: From November 10, 2025 (including subsequent imports)
🎯 1. 3506.99.00.00 & 3506.91.50.00 —— Classified as Adhesives
| Item | Content |
|---|---|
| Base Tariff | 2.1% (ad valorem) |
| Section 301 Surcharge (Additional Tariff) | +25.0% (USITC Footnote for Chinese goods) |
| Section 122 Tariff | +10.0% (Specific policy surcharge) |
| Total Tax Rate | 37.1% |
| Tax Calculation | CIF Value × 37.1% |
| De Minimis Eligibility | ❌ Not Eligible (High tariff rates usually deny de minimis benefits for large volumes, check specific CBP rulings) |
| Legal Basis Path | Base:3506 → Section 301:25% → Section 122:10% |
📌 Explanation:
- "Base Tariff 2.1%": Standard MFN rate for chemical adhesives.
- "Additional Tariff 25.0%": Under Section 301 of the Trade Act of 1974, targeting Chinese imports.
- "Section 122 Tariff 10%": Specific statutory surcharge applicable to this category.
- Total 37.1%: This is the lower of the two main tax brackets available for this product.
🎯 2. 3903.90.50.00 —— Classified as Styrene Polymers
| Item | Content |
|---|---|
| Base Tariff | 6.5% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Basis Path | Base:3903 → Section 301:25% → Section 122:10% |
📌 Note:
- Higher base rate (6.5%) makes this option 4.4% more expensive than the adhesive classification.
- Applies if the customs authority views the product primarily as a raw plastic material rather than a formulated adhesive.
🎯 3. 3901.90.90.00 & 3901.90.55.01 —— Classified as Ethylene Polymers/Copolymers
| Item | Content |
|---|---|
| Base Tariff | 6.5% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Basis Path | Base:3901 → Section 301:25% → Section 122:10% |
📌 Note:
- Same tax burden as Styrene Polymers.
- Classification depends on the specific polymer type (Ethylene vs. Styrene) and state (Primary form).
- Warning: If the product is a formulated mixture for casting, Chapter 35 (Adhesives) is often the more defensible and cheaper argument than Chapter 39 (Raw Plastics), unless it is sold strictly as a raw polymer resin.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
✅ 1. Documentation Checklist (Essential)
| Document | Required | Explanation |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must detail chemical composition, polymer type (Styrene/Ethylene), and binding mechanism. |
| ✅ Certificate of Analysis (COA) | ✔️ | Proves it is a formulated adhesive vs. raw polymer resin. |
| ✅ Commercial Invoice | ✔️ | Clearly state "Casting Binder Adhesive, Polymer-based". Avoid vague terms like "Plastic Resin" if claiming Chapter 35. |
| ✅ Packaging List | ✔️ | Show net/gross weight accurately for CIF calculation. |
| ✅ Origin Certificate (CO) | ✔️ | Confirm Chinese origin to apply/verify surcharges. |
| ✅ Safety Data Sheet (SDS) | ✔️ | Required for hazardous material screening during customs inspection. |
✅ 2. Declaration Strategy (Key Mantra)
🔥 “Classify as Adhesive, Base Rate Lower, 37.1% Total, Save the Money!”
| Scenario | Correct Declaration | Wrong Approach |
|---|---|---|
| Formulated Binder | 3506.99.00.00 or 3506.91.50.00 |
Misdeclare as 3901/3903 → +4.4% extra tax |
| Raw Polymer Resin | 3901.90.90.00 or 3903.90.50.00 |
Misdeclare as Adhesive → Classification Error Risk |
| Mixed Container | Separate HS Codes | Combined declaration → Customs Rejection |
| Vague Description | "Polymer Casting Binder" | "Plastic Glue" → Delay for Inspection |
✅ 3. Special Case Handling
| Situation | Handling Advice |
|---|---|
| OEM Private Label | Provide customer PO + spec sheet to prove it is a specific adhesive formulation. |
| Liquid vs. Solid | Ensure description matches physical state. Liquid binders often fall under 3506.99. |
| Chemical Composition Change | If polymer type changes (e.g., from Styrene to Ethylene), update HS Code accordingly. |
| Customs Audit | Have a lab report ready to prove it is a "ready-to-use adhesive" and not a raw plastic material. |
🌍 V. Global Main Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3506.99.00.00 (Adhesive) |
37.1% | SDS Required | 41.5% if classified as Polymer (3901/3903). Adhesive is cheaper. |
| 🇨🇳 China | 3506.99.00.00 |
~5-7% | None | Lower base tariff, no Section 301/122. |
| 🇪🇺 EU | 3506.99 |
~6.5% | REACH Registration | No 25% surcharge. |
| 🇬🇧 UK | 3506.99 |
~6.5% | UK REACH | Post-Brexit rules apply. |
| 🇯🇵 Japan | 3506.99 |
~4-6% | JIS Standard | Generally low tariff. |
📌 Conclusion:
- USA is the most complex market due to the 25% Section 301 + 10% Section 122 surcharges.
- Choosing Chapter 35 (Adhesive) saves 4.4% compared to Chapter 39 (Polymer).
- China, EU, and other markets do not have these punitive surcharges, making the total cost significantly lower.
📌 VI. Common Errors & Pitfall Avoidance (Blood & Tears Lessons)
❌ Error 1: Declaring "Casting Binder" as "Raw Plastic Resin" (3901)
👉 Consequence: 41.5% tax instead of 37.1% → Loss of profit margin.
❌ Error 2: Using vague descriptions like "Glue" or "Plastic"
👉 Consequence: Customs delays, manual inspection, potential reclassification penalty.
❌ Error 3: Ignoring Section 122 Tariff
👉 Consequence: Underpayment of 10% surcharge → Back taxes + Interest + Fines.
❌ Error 4: Not providing SDS/COA
👉 Consequence: Shipment held at port for chemical safety review.
✅ Correct Approach:
"Polymer-Based Casting Binder Adhesive, Liquid, For Sand Molds, Chemical Composition: [Details], SDS Attached"
🎯 VII. Conclusion: Professional Declaration, Save Time & Money!
🎯 Remember the Mantra:
🔹 "Adhesive = 37.1%, Polymer = 41.5%, Save 4.4%! Don't Let Raw Material Classification Kill Your Margin!"
🔹 "HS Code Determines Destiny, 4.4% Difference, Declare Correctly, Save Thousands!"
📌 Pro Tip:
If your product is a formulated mixture designed for binding, argue strongly for Chapter 35 (Adhesives). Only use Chapter 39 if you are shipping pure raw polymer resins.
Apply for Advance Rulings from CBP if the chemical nature is complex to avoid post-import audits.
📣 Immediate Action:
📞 Contact Professional Customs Broker + Provide Product Specs + Apply for HS Code Advance Ruling
🚀 Let your Casting Binder Clear Customs Smoothly, Maximize Profit!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every Cent of Cost Deserves Precise Calculation!
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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。