铸造用防锈固化剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3209900000 | 40.9% | CN | US | Official Doc |
| 3814005090 | 41.0% | CN | US | Official Doc |
| 3209100000 | 40.1% | CN | US | Official Doc |
| 3824999397 | 40.0% | CN | US | Official Doc |
| 3814005090 | 41.0% | CN | US | Official Doc |
AI Analysis
🏭 Castings Rust-Proof Curing Agent (Rust-Proofing & Curing Agent for Castings)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Customs Strategy
📌 I. Product Definition & Classification: Do You Really Understand "Casting Rust-Proof Curing Agent"?
A "Casting Rust-Proof Curing Agent" is a specialized chemical additive used in the manufacturing of metal castings (iron, steel, aluminum, etc.). Its primary functions are to accelerate the curing process of mold materials (such as resin-bonded sand) and to provide a protective layer against rust/corrosion on the surface of the castings.
In international trade, this product is classified based on its chemical composition and primary function. It is generally regarded as a chemical preparation, resin modifier, or anti-rust coating component. The classification depends heavily on whether it is viewed as a "paint/varnish component," a "solvent/mixture," or a "chemical product elsewhere."
⚠️ Key Classification Distinction:
- If the agent is primarily a chemical compound for hardening resins used in casting molds → It may fall under 3209 (Paints/Varnishes) as a functional additive.
- If it is viewed as an organic solvent/mixture for coating applications → It may fall under 3814 (Organic Solvent Mixtures).
- If it is a general anti-rust chemical preparation not specifically listed elsewhere → It falls under the residual category 3824.
- Note: The specific HS Code depends on the exact chemical formulation (e.g., polymer-based vs. solvent-based vs. general chemical mixture).
📦 II. HS Code Classification Details (Based on Provided Data)
| HS Code | Product Description | Application Logic | Total Tax Rate (China Origin to US) |
|---|---|---|---|
3209.90.00.00 |
Other paints, varnishes and similar coatings, based on synthetic polymers dissolved in non-aqueous mediums; Based on curing agent use, inferred as chemical synthetic substance for coating/resin modification, fits functional additive category. | Used for modifying resins or coatings in casting processes; fits "other" functional additives under paint/varnish category. | 40.9% |
3814.00.50.90 |
Preparations for removing oil, grease, dirt or other coatings (incl. preparations for cleaning glass, etc.); Anti-rust agent is a chemical liquid/solvent product, fits organic composite solvent & diluent material attribute, fits reasonable matching under other categories. | Anti-rust agents are often solvent-based chemical liquids; fits "organic composite solvent/diluent" category. Also listed as "other organic chemical preparations." | 41.0% |
3209.10.00.00 |
Based on curing agent use, inferred as chemical modified polymer class paint/varnish component, fits polymer-based paint/varnish material characteristics. | Specifically for castings surface treatment, treated as polymer-based coating component. | 40.1% |
3824.99.93.97 |
Product belongs to chemical preparations, fits chemical industry or related industrial chemical products & preparations material attribute, belongs to the residual logic of other categories. | General chemical anti-rust/curing agent; falls under "other chemical products" if not specifically classified elsewhere. | 40.0% |
3814.00.50.90 |
Anti-rust agent belongs to chemical liquid/solvent product, fits organic composite solvent & diluent material attribute, fits reasonable matching under other categories. | Reiterated classification for anti-rust agents as solvent-based chemical preparations. | 41.0% |
🔍 Important Note:
- The tax rates vary slightly (40.0% – 41.0%) due to different base tariff interpretations (5.0% – 6.0%) based on whether the product is seen as a "paint component" (3209), "solvent/mixture" (3814), or "general chemical" (3824).
- All categories are subject to Additional Tariffs (Section 301 & IEEPA), leading to a high total tax burden.
💰 III. 2026 Latest Tariff Rate Details (Including Additional Taxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: From November 10, 2025 (including subsequent imports)
🎯 1. 3209.90.00.00 —— Paints, Varnishes & Similar Coatings (Other)
| Item | Detail |
|---|---|
| Base Tariff | 5.9% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| IEEPA Additional Tariff (Section 122) | +10.0% |
| Total Tax Rate | 40.9% |
| Tax Calculation | CIF Value × 40.9% |
| De Minimis Eligibility | ❌ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3209.90.00.00 → FOOTNOTE:3209.90.00.00 |
📌 Explanation:
- 5.9% Base Tariff: Standard import duty for "other paints/varnishes."
- 25% Section 301 Tariff: Imposed on Chinese-made chemical preparations under HTS 3209.
- 10% IEEPA Tariff: Additional tariff on Chinese goods under International Emergency Economic Powers Act.
- Total 40.9%: A significant cost that must be factored into pricing.
🎯 2. 3814.00.50.90 —— Organic Solvent Mixtures & Other Chemical Preparations
| Item | Detail |
|---|---|
| Base Tariff | 6.0% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| IEEPA Additional Tariff (Section 122) | +10.0% |
| Total Tax Rate | 41.0% |
| Tax Calculation | CIF Value × 41.0% |
| De Minimis Eligibility | ❌ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3814.00.50.90 → FOOTNOTE:3814.00.50.90 |
📌 Note:
- 6.0% Base Tariff: Higher base rate than 3209, but similar additional tariffs.
- This classification is often used when the product is viewed as a solvent-based anti-rust preparation rather than a paint.
- Total 41.0%: The highest rate among the options, but still manageable with proper planning.
🎯 3. 3209.10.00.00 —— Paints, Varnishes, Based on Synthetic Polymers
| Item | Detail |
|---|---|
| Base Tariff | 5.1% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| IEEPA Additional Tariff (Section 122) | +10.0% |
| Total Tax Rate | 40.1% |
| Tax Calculation | CIF Value × 40.1% |
| De Minimis Eligibility | ❌ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3209.10.00.00 → FOOTNOTE:3209.10.00.00 |
📌 Note:
- 5.1% Base Tariff: Lower base rate, applicable if the product is strictly classified as a polymer-based paint/varnish component.
- Total 40.1%: Slightly lower than the other options, but requires clear documentation that the product is a polymer-based coating component.
🎯 4. 3824.99.93.97 —— Other Chemical Products & Preparations
| Item | Detail |
|---|---|
| Base Tariff | 5.0% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| IEEPA Additional Tariff (Section 122) | +10.0% |
| Total Tax Rate | 40.0% |
| Tax Calculation | CIF Value × 40.0% |
| De Minimis Eligibility | ❌ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3824.99.93.97 → FOOTNOTE:3824.99.93.97 |
📌 Note:
- 5.0% Base Tariff: The lowest base rate among the options.
- This classification is a residual category for chemical preparations not specified elsewhere.
- Total 40.0%: The most cost-effective option if the product can be justified as a general chemical preparation.
🛠️ IV. Customs Clearance Practical Advice (Battlefield Pitfall Avoidance Guide)
✅ 1. Required Documentation Checklist (None are Optional)
| Document | Mandatory | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must include chemical composition, function (curing/anti-rust), and application method. |
| ✅ Safety Data Sheet (SDS) | ✔️ | Critical for chemical products; ensures compliance with safety regulations. |
| ✅ Product Photos (Including Labels) | ✔️ | Clear display of model, brand, chemical warnings, and net weight. |
| ✅ Third-Party Test Report | ✔️ | If applicable (e.g., corrosion resistance test, curing time test). |
| ✅ Commercial Invoice | ✔️ | Must clearly state "Chemical Curing Agent for Castings" or "Anti-Rust Preparation for Metal." |
| ✅ Packing List | ✔️ | Detail the quantity, weight, and packaging type (drums, bottles, etc.). |
| ✅ Certificate of Origin (CO) | ✔️ | If applicable for non-China origin (but this is China-origin, so CO confirms CN origin). |
✅ 2. Declaration Tips (Key Mantras)
🔥 "Chemical Nature First, Function Clear, Avoid Ambiguity, Tax Optimized!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Product is a solvent-based anti-rust agent | 3814.00.50.90 (Organic Solvent Mixture) |
Misdeclaring as "Paint" → 40.1% or 40.9% |
| Product is a resin curing agent | 3209.90.00.00 or 3209.10.00.00 |
Misdeclaring as "General Chemical" → 40.0% (if allowed) |
| Product is a general chemical preparation | 3824.99.93.97 |
Over-complicating with "Paint" classification |
| Mixed Packaging (Agent + Hardener) | Declare as a complete set | Split declaration → Higher risk of rejection |
📌 Note:
- Use precise English descriptions: "Chemical Curing Agent for Metal Castings" or "Anti-Rust Preparation for Steel Castings."
- Avoid vague terms like "Industrial Chemical" without further detail.
✅ 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| OEM Custom Formulation | Provide customer order + formulation details to justify HS Code classification. |
| Product Used in Multiple Industries | Declare based on primary intended use (casting industry) to support classification. |
| High-Volume Imports | Consider Advance Ruling from CBP to lock in HS Code and tax rate. |
| Dangerous Goods Classification | Ensure proper IMDG/IATA classification if shipped by air/ocean; additional fees may apply. |
🌍 V. Global Market Customs Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 United States | 3824.99.93.97 or 3209.90.00.00 |
40.0% - 41.0% (China Origin) | SDS, EPA Registration (if applicable) | High tariff due to Section 301 & IEEPA. |
| 🇨🇳 China | 3824.99.93.97 or 3209.90.00.00 |
5.0% - 6.0% | GB Standards Compliance | No additional tariffs. |
| 🇪🇺 European Union | 3824.99.93.97 or 3209.90.00.00 |
0% - 4.5% (if REACH compliant) | REACH Registration, CLP Labeling | REACH compliance is critical for chemical products. |
| 🇦🇺 Australia | 3824.99.93.97 or 3209.90.00.00 |
5.0% | AICIS Registration | No additional tariffs. |
| 🇯🇵 Japan | 3824.99.93.97 or 3209.90.00.00 |
0% - 4.0% | JIS Standards Compliance | No additional tariffs. |
📌 Conclusion:
- The US is the only market with high additional tariffs (40%+) for these chemical products from China.
- EU and Japan require strict chemical compliance (REACH, JIS) but have lower tariffs.
- China-origin goods to the US face significant cost pressure; consider supply chain adjustments.
📌 VI. Common Mistakes & Pitfall Avoidance (Blood & Tears Lessons)
❌ Mistake 1: Declaring as "Paint" when it is a "Solvent-Based Anti-Rust Agent"
👉 Consequence: HS Code 3209 may not apply → Customs Rejection or Re-classification → Delays & Penalties.
❌ Mistake 2: Omitting SDS (Safety Data Sheet)
👉 Consequence: Seizure or Return by CBP due to lack of safety information for chemical products.
❌ Mistake 3: Vague Declaration ("Chemical Agent")
👉 Consequence: Customs Audit → Increased inspection time, potential fines for misclassification.
❌ Mistake 4: Ignoring IEEPA 10% Tariff
👉 Consequence: Underpayment of Duties → Back taxes + Interest + Penalties.
✅ Correct Practice:
"Chemical Curing Agent for Metal Castings, Solvent-Based, Contains Polymer Resin, SDS Provided, Model XYZ, Used in Foundry Industry"
🎯 VII. Conclusion: Professional Declaration, Save Time, Money, and Effort!
🎯 Remember the Mantra:
🔹 "Chemical Nature First, Function Clear, Avoid Ambiguity, Tax Optimized!"
🔹 "HS Code Determines Destiny, Tax Rate Difference of 1% Can Cost Thousands!"
🔹 "SDS is Mandatory, IEEPA is Real, Don't Be Naive!"
📌 Pro Tip:
If your product is manufactured in Vietnam, Mexico, Thailand, or Malaysia, you may apply for IEEPA Exemption, reducing the tax rate to 0% - 5%.
Consider Advance Ruling (Proffering Ruling) from CBP to lock in the HS Code and tax rate, avoiding clearance risks.
📣 Immediate Action:
📞 Contact Professional Customs Broker + Provide Product Photos + Apply for HS Code Advance Ruling
🚀 Let Your Chemical Products pass customs smoothly, export efficiently, and double your profits!
✨ Professional Customs Clearance Starts with Accurate Classification!
💼 Every Cent of Your Cost Deserves to Be Calculated Precisely!
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.