冷硬砂型粘结剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3906902000 | 41.3% | CN | US | Official Doc |
| 3906905000 | 39.2% | CN | US | Official Doc |
| 3506915000 | 37.1% | CN | US | Official Doc |
| 3824100000 | 41.0% | CN | US | Official Doc |
| 3824999397 | 40.0% | CN | US | Official Doc |
AI Analysis
🧱 Sand Mold Binders (Cold-Setting Resin Binders)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Grade Clearance Strategy 📌 I. Product Definition & Classification: Do You Really Understand "Sand Mold Binders"?
Cold-Setting Sand Mold Binders are critical chemical additives used in the casting industry to bind sand grains together, forming molds and cores for metal casting. The term "cold-setting" (or self-hardening) implies that the binder reacts and hardens at room temperature without requiring external heat curing.
In international trade, these binders are complex chemical mixtures. Their classification depends heavily on their primary chemical composition (e.g., acrylics, phenolics, furans, or silicates) and their intended use (specifically for foundry molds/cores). Misclassification is a common pitfall that leads to significant tariff discrepancies and customs delays.
⚠️ Key Distinction Point: - If the binder is essentially a raw polymer/acrylic resin in its primary form → It may fall under Chapter 39 (Plastics). - If it is a pre-mixed, formulated adhesive (mixed with catalysts, fillers, etc.) → It may fall under Chapter 35 (Proteinaceous substances/adhesives) or Chapter 38 (Miscellaneous chemical products).
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Key Classification Logic |
|---|---|---|---|
3906.90.20.00 |
Acrylic Resins in Primary Forms | Binders where the main component is acrylic resin, classified as a raw plastic material. | Material-Based: Focuses on the "primary form" of the acrylic resin. |
3506.91.50.00 |
Prepared Adhesives Based on Polymers | Pre-mixed bonding agents for molds, chemically formulated for adhesion. | Function-Based: Classified as a "prepared adhesive" based on polymers/rubbers. |
3824.10.00.00 |
Prepared Binders for Foundry Molds | Specific binders for casting molds/cores, regardless of specific polymer type. | Use-Based: Matches the specific industrial use (foundry mold binder). |
3824.99.93.97 |
Other Prepared Chemical Products | General chemical制剂 for sand casting if it doesn't fit the above specific categories. | Fallback Category: Other chemical products not elsewhere specified. |
🔍 Key Reminder: - Pre-mixed vs. Raw: If the product is a ready-to-use mix with hardeners included, it is more likely to be classified under 3506 or 3824. If it is a pure resin concentrate, 3906 might apply. - Foundry Specificity: Customs authorities often prefer 3824.10 for products explicitly labeled as "Foundry Mold Binders" due to their specific industrial application, even if chemically similar to generic adhesives.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US) ✅ Country of Origin: China (CN) ✅ Effective Date: From November 10, 2025 (including subsequent imports)
🎯 1. 3906.90.20.00 —— Acrylic Resins in Primary Forms
| Item | Content |
|---|---|
| Base Duty Rate | 6.3% (Ad Valorem) |
| Section 301 Surcharge (USITC) | +25.0% (From USITC Footnote) |
| 122 Clause Surcharge (IEEPA/DOGE) | +10.0% (Specific clause for certain Chinese chemical imports) |
| Total Tax Rate | 41.3% |
| Tax Calculation | CIF Value × 41.3% |
| De Minimis Eligibility | ❌ Not Eligible (High-risk category for Section 301/122 clauses) |
| Legal Authority Path | HTSUS:3906.90.20.00 → USITC:301_Surtax → DOGE/IEEPA:122_Clause |
📌 Explanation: - 6.3% Base Rate: Standard Most Favored Nation (MFN) rate for acrylic resins. - 25% Section 301: Standard retaliatory tariff on Chinese plastics/resins. - 10% 122 Clause: Additional surcharge for specific chemical products under recent trade enforcement actions. - Total 41.3%: A high barrier to entry. Importers must be aware of this significant cost increase.
🎯 2. 3506.91.50.00 —— Prepared Adhesives Based on Polymers
| Item | Content |
|---|---|
| Base Duty Rate | 2.1% (Ad Valorem) |
| Section 301 Surcharge (USITC) | +25.0% |
| 122 Clause Surcharge (IEEPA/DOGE) | +10.0% |
| Total Tax Rate | 37.1% |
| Tax Calculation | CIF Value × 37.1% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Authority Path | HTSUS:3506.91.50.00 → USITC:301_Surtax → DOGE/IEEPA:122_Clause |
📌 Note: - Base Rate: Slightly lower than acrylics (2.1% vs 6.3%). - Total Impact: Despite the lower base, the total tax is still 37.1%. This classification assumes the product is viewed as a "prepared adhesive" rather than a raw resin. - Risk: Customs may challenge this if the "adhesive" properties are weak or if it's purely a casting binder without bonding function to other materials.
🎯 3. 3824.10.00.00 —— Prepared Binders for Foundry Molds or Cores
| Item | Content |
|---|---|
| Base Duty Rate | 6.0% (Ad Valorem) |
| Section 301 Surcharge (USITC) | +25.0% |
| 122 Clause Surcharge (IEEPA/DOGE) | +10.0% |
| Total Tax Rate | 41.0% |
| Tax Calculation | CIF Value × 41.0% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Authority Path | HTSUS:3824.10.00.00 → USITC:301_Surtax → DOGE/IEEPA:122_Clause |
📌 Key Insight: - Specific Use: This code is the most technically accurate for "cold-setting sand mold binders" as it explicitly mentions "For molds or cores for metal casting." - Total 41.0%: Similar to acrylics. Customs examiners often prefer this code for specialized foundry chemicals to avoid ambiguity. - Advantage: Reduces the risk of classification disputes compared to generic "adhesive" codes.
🎯 4. 3824.99.93.97 —— Other Prepared Chemical Products (Others)
| Item | Content |
|---|---|
| Base Duty Rate | 5.0% (Ad Valorem) |
| Section 301 Surcharge (USITC) | +25.0% |
| 122 Clause Surcharge (IEEPA/DOGE) | +10.0% |
| Total Tax Rate | 40.0% |
| Tax Calculation | CIF Value × 40.0% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Authority Path | HTSUS:3824.99.93.97 → USITC:301_Surtax → DOGE/IEEPA:122_Clause |
📌 Note: - Fallback Option: Used when the product does not fit the specific "Mold Binder" category (3824.10) but is clearly a chemical preparation. - Total 40.0%: The lowest total among the options, but also the highest risk of reclassification by Customs if they deem it a dedicated mold binder.
🛠️ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Avoidance)
✅ 1. Required Documentation Checklist (Mandatory)
| Document | Mandatory? | Explanation |
|---|---|---|
| ✅ Technical Data Sheet (TDS) | ✔️ | Must detail chemical composition (e.g., % Acrylic, % Phenolic), pH, viscosity, and hardening mechanism. |
| ✅ Safety Data Sheet (SDS) | ✔️ | Required for hazardous chemical clearance. Must show UN numbers if applicable. |
| ✅ Product Photo (Label & Container) | ✔️ | Clear view of the label, including "Foundry Sand Binder," "Cold-Setting," and batch numbers. |
| ✅ Bill of Lading / Commercial Invoice | ✔️ | Must accurately describe goods as "Cold-Setting Sand Mold Binder" or "Foundry Resin Binder," NOT just "Glue" or "Resin." |
| ✅ Certificate of Origin | ✔️ | To confirm China origin and apply applicable tariffs. |
| ✅ Usage Statement | ✔️ | Brief statement confirming the product is used exclusively for sand mold/core preparation in metal casting. |
✅ 2. Declaration Strategy (Key Mantras)
🔥 "Be Specific, Don't Generalize; Function Defines Function!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| General Purpose Glue | 3506.91.50.00 |
Using generic terms like "Industrial Adhesive" for a specialized foundry binder → Risk of Misclassification. |
| Pure Acrylic Resin | 3906.90.20.00 |
Calling it a "Binder" if it's raw resin → May trigger Chapter 39 duties. |
| Specialized Foundry Binder | 3824.10.00.00 |
Best choice if explicitly for molds/cores. Provides clearest customs guidance. |
| Mixed Chemical Preparation | 3824.99.93.97 |
Only if it doesn't fit 3824.10 exactly. Higher risk of audit. |
📌 Pro Tip: - Use the term "Cold-Setting Foundry Sand Binder" in the description. - Avoid vague terms like "Chemical Mix" or "Industrial Glue." - Highlight "For Metal Casting Mold/Core" in the product description to justify 3824.10.
✅ 3. Special Circumstances & Handling
| Situation | Handling Advice |
|---|---|
| OEM/Custom Formulation | Provide the client’s specification sheet. If it’s a custom mix for a specific foundry, emphasize the industrial application in the declaration. |
| Hazardous Material Classification | If the binder contains flammable solvents, ensure IMDG/UN Certification is included. Non-compliance leads to immediate port rejection. |
| Part of a Kit | If imported with sand or hardeners, declare as a single unit if marketed as such. If packed separately, they may be declared under different HTS codes (e.g., sand under 2505). |
| Samples vs. Commercial | Samples under $250 may be exempt from duties but still subject to Section 301/122 clauses if explicitly excluded. Check current de minimis rules for China-origin goods. |
🌍 V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Base Duty | Notes |
|---|---|---|---|
| 🇺🇸 USA | 3824.10.00.00 |
41.0% (Total) | Highest impact due to 301 & 122 clauses. |
| 🇨🇳 China | 3824.10.00.00 |
~5-6% | Standard MFN rate. No surtaxes for imports into China. |
| 🇪🇺 EU | 3824.10.00 |
~3-5% | CE/REACH compliance required for chemical imports. |
| 🇲🇽 Mexico | 3824.10.00 |
~5% | USMCA considerations if originating in NA. |
| 🇮🇳 India | 3824.10.00 |
~7-10% | Anti-dumping duties may apply depending on country of origin. |
📌 Conclusion: - USA is the most critical market for tariff planning due to the 41.3% total tax burden. - Chapter 38 is generally favored for specialized industrial chemicals in many jurisdictions as it reflects the specific use better than generic adhesive codes.
📌 VI. Common Errors & Pitfall Guide (Lessons from the Field)
❌ Mistake 1: Declaring "Sand Mold Binder" as "General Purpose Adhesive" (3506) to save on base duty.
👉 Consequence: Customs may reclassify it to 3824.10 or 3906 during audit, leading to retroactive duties + penalties.
❌ Mistake 2: Ignoring the "122 Clause" Surcharge. 👉 Consequence: Underpaying ~10% of the CIF value. This is a new enforcement focus and results in immediate seizures or demands for payment.
❌ Mistake 3: Failing to provide a SDS for chemical imports. 👉 Consequence: Port refusal. Chemicals without proper hazard labeling and SDS cannot clear customs in the US or EU.
❌ Mistake 4: Using "Resin" as the sole description without specifying "For Foundry Use." 👉 Consequence: Customs may classify it under Chapter 39 (Plastics) if they view it as a raw material, leading to disputes over "Primary Form" vs. "Prepared Product."
✅ Correct Approach:
"Cold-Setting Resin Bond for Sand Molds, Chemical Preparation, Non-Hazardous, Model XYZ, for Metal Casting Industry Only"
🎯 VII. Conclusion: Professional Declaration Saves Costs!
🎯 Remember the Mantra:
🔹 "Be Specific: Foundry Binder = 3824.10" 🔹 "Total Tax is 41%: Plan Your Margin Accordingly" 🔹 "Docs Matter: SDS & TDS are Non-Negotiable"
📌 Pro Tip: If your binder originates from Vietnam, Thailand, or India, you may be eligible for lower or zero Section 301 duties. Ensure your Certificate of Origin clearly reflects the non-China origin to claim these benefits.
💡 Actionable Step: - 📞 Consult a Licensed Customs Broker for pre-clearance consultation. - 📄 Request a Pre-Decision from CBP if the classification is uncertain. - 🚀 Optimize Supply Chain: Consider sourcing from non-China countries if the 41% tariff erodes your margin.
📣 Immediate Action Required:
📞 Contact Your Freight Forwarder Today 📋 Prepare Complete Technical Documentation 🚀 Ensure Smooth Customs Clearance & Maximize Profitability!
✨ Professional Clearance Starts with Precise Classification! 💼 Your Every Cent of Cost is Worth Precise Calculation!
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.