模具型芯湿处理剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3814001000 | 41.5% | CN | US | Official Doc |
| 3402905010 | 38.7% | CN | US | Official Doc |
| 3402905030 | 38.7% | CN | US | Official Doc |
| 3814002000 | 41.5% | CN | US | Official Doc |
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🛠️ Mold Cores & Wet Treatment Agents: The Complete 2026 US Customs Classification Guide
🌐 HS Code Reference & Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 Part I: Product Definition & Classification: What Exactly Are "Wet Treatment Agents for Mold Cores"?
The term "Mold Cores and Wet Treatment Agents" refers to chemical preparations used in the manufacturing process of metal casting. Specifically, these are coatings, binders, or release agents applied to sand cores or molds to prevent metal adhesion, improve surface finish, or control gas emission.
In international trade, these products are often ambiguous because they straddle the line between chemical mixtures and manufacturing consumables. Misclassification here can lead to massive tariff discrepancies (from 8% to 85%).
⚠️ Key Distinction:
- If the product is a general-purpose chemical mixture (e.g., binder, solvent-based cleaner) → It falls under Chapter 38 (Miscellaneous Chemical Products).
- If the product is a specialized accessory specifically designed for semiconductor equipment or high-tech machinery → It may fall under Chapter 84 (Machinery).
- If the product is a paint/coating applied via wet coating methods → It falls under Chapter 32 (Tanning/Dyeing Extracts; Paints).
📦 Part II: HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided data, the product can be classified into four distinct categories depending on its chemical composition, application method, and specific industrial use.
| HS Code | Product Description (From Data) | Application Scenario | Key Classification Logic |
|---|---|---|---|
3208.10.00.00 |
Liquid Paint/Varnish based on wet coating morphology. Dispersed/dissolved in non-aqueous media. | General industrial mold coatings, protective lacquers. | Classified as "Paints/Varnishes" because it is a liquid coating system applied to a substrate (mold/core). |
8486.90.00.00 |
Accessories/Consumables for semiconductor or IC manufacturing equipment. | High-tech semiconductor wafer processing, precision mold parts for electronics. | Classified as "Parts/Accessories" because it is deemed essential for specific high-tech machinery (semiconductor fabs). |
3824.50.00.10 |
Mold Cores/Sand Cores. Wet form, chemically coated. | Foundry sand cores, casting molds in heavy industry. | Classified as "Prepared Binders/Coatings" for foundry use, specifically for cores. |
3824.10.00.00 |
Cast Cores, coated agent acting as a prepared binder for mold applications. | Binder agents mixed with sand for mold creation. | Classified as "Prepared Binders" used in the molding process itself. |
3814.00.10.00 |
Cleaners/Degreasers. Contains organic solvents or aromatic mixtures. | Cleaning mold cores/pre-mold surfaces, removing residue. | Classified as "Chemical Mixtures for Removal" (cleaning agents), not coating agents. |
🔍 Critical Reminder:
- Do not confuse "Coating" with "Cleaning": If the agent removes material (solvent-based cleaner), it is 3814. If it adds material (paint/binder), it is 3208, 3824, or 8486.
- Semiconductor Exception: If the mold core is used exclusively for semiconductor equipment, 8486 applies, but it carries the highest tariff risk.
- Wet Morphology: The phrase "wet coating morphology" strongly suggests 3208 (Paints) unless it is a raw binder (3824).
💰 Part III: 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: USA (US)
✅ Origin: China (CN)
✅ Effective Time: 2025/2026 (Current Trade War Era)
🎯 1. 3208.10.00.00 – Paints/Varnishes (Liquid Coating)
| Item | Details |
|---|---|
| Base Tariff | 3.7% (ad valorem) |
| Section 301 Surtax | +25% (USITC Footnote 9903.88.01 equivalent) |
| Section 122 Tariff | +10% (Specific policy add-on) |
| Total Rate | 38.7% |
| Tax Calculation | CIF Value × 38.7% |
| De Minimis Exemption | ❌ Not Eligible (High tariff items are denied de minimis) |
| Legal Basis Path | Base: 3.7% → Section 301: 25% → Sec 122: 10% |
📌 Explanation:
- This is a paint/coating. The base rate is low (3.7%), but the 35% surtax (25% + 10%) makes it expensive.
- Risk: If the product is actually a "chemical mixture" (3824) but declared as paint, customs may reclassify it, leading to penalties.
🎯 2. 8486.90.00.00 – Parts/Accessories for Semiconductor Equipment
| Item | Details |
|---|---|
| Base Tariff | 0.0% |
| Section 301 Surtax | +25% |
| Section 122 Tariff | +10% |
| Section 232 (Steel/Aluminum/Copper) | +50% (If applicable materials are involved) |
| Total Rate | 85.0% (Up to 85% if metal components) |
| Tax Calculation | CIF Value × 85% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | IEEPA:9903.01.25 → USITC:8486.90.00.00 |
📌 Critical Warning:
- This is the highest risk category. Even though the base tariff is 0%, the 85% total rate is devastating.
- Why? Customs views semiconductor equipment accessories as strategic/high-tech imports, attracting heavy protectionist tariffs.
- Note: If the product contains steel, aluminum, or copper parts, the Section 232 50% tariff may be added on top, pushing rates even higher.
🎯 3. 3824.50.00.10 – Prepared Binders for Mold Cores
| Item | Details |
|---|---|
| Base Tariff | 0.0% |
| Section 301 Surtax | +25% |
| Section 122 Tariff | +10% |
| Total Rate | 35.0% |
| Tax Calculation | CIF Value × 35.0% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | Base: 0.0% → Section 301: 25% → Sec 122: 10% |
📌 Explanation:
- This is a foundry binder. The base tariff is often 0% for certain chemical binders, but the 35% surtax still applies.
- Advantage: Slightly cheaper than the paint category (38.7%) and much cheaper than the semiconductor category (85%).
🎯 4. 3824.10.00.00 – Prepared Binders (General)
| Item | Details |
|---|---|
| Base Tariff | 6.0% |
| Section 301 Surtax | +25% |
| Section 122 Tariff | +10% |
| Total Rate | 41.0% |
| Tax Calculation | CIF Value × 41.0% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | Base: 6.0% → Section 301: 25% → Sec 122: 10% |
📌 Explanation:
- This is a general prepared binder. Unlike 3824.50, this code has a 6% base tariff.
- Result: Total 41%, which is higher than 3824.50 (35%).
- Strategy: Try to qualify for 3824.50 (specific to mold cores) to save 6% on the base rate.
🎯 5. 3814.00.10.00 – Cleaner/Degreaser (Chemical Mixture)
| Item | Details |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Surtax | +25% |
| Section 122 Tariff | +10% |
| Total Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | Base: 6.5% → Section 301: 25% → Sec 122: 10% |
📌 Explanation:
- If the product is a cleaner (removes residue), it falls here.
- Note: This is the most expensive base rate (6.5%) among the chemical categories, leading to the highest total rate (41.5%) in the non-semiconductor group.
🛠️ Part IV: Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Preparation Checklist (Non-Negotiable)
| Document | Required? | Explanation |
|---|---|---|
| ✅ Material Safety Data Sheet (MSDS/SDS) | ✔️ Mandatory | Must specify if the product is a "Paint," "Binder," or "Cleaner." |
| ✅ Technical Specification Sheet | ✔️ Mandatory | Details application method (wet coating, spray, dip) and curing process. |
| ✅ Product Photos (Label + Container) | ✔️ Mandatory | Must show the product name, chemical composition %, and intended use. |
| ✅ Formula/Composition Breakdown | ✔️ Highly Recommended | Helps customs distinguish between "Paint" (3208) and "Binder" (3824). |
| ✅ Commercial Invoice | ✔️ Mandatory | Clearly state "Chemical Binder for Mold Cores" or "Mold Cleaner," NOT generic "Industrial Supplies." |
| ✅ Certificate of Origin (CO) | ✔️ Mandatory | To confirm Chinese origin (triggering Section 301/122 tariffs). |
✅ 2. Declaration Strategy (The Golden Rules)
🔥 “Function Defines Code, Composition Defines Base!”
| Scenario | Correct HS Code | Wrong Approach | Consequence |
|---|---|---|---|
| Liquid coating sprayed on mold | 3208.10.00.00 |
Declare as "Binder" (3824) | Risk of audit; rate diff is 38.7% vs 35%. |
| Sand binder mixed into core | 3824.50.00.10 |
Declare as "Paint" (3208) | Risk of audit; rate diff is 35% vs 38.7%. |
| Cleaner for removing old coating | 3814.00.10.00 |
Declare as "Coating" (3208) | High Risk: Function is cleaning, not coating. |
| Used in Semiconductor Fab | 8486.90.00.00 |
Declare as "Chemical" (3824) | Disaster: Rate jumps from ~35% to 85%. |
📌 Crucial Note on Semiconductors:
If your product is used in semiconductor manufacturing, do NOT try to hide it under chemical codes (3824/3208). Customs has sophisticated databases to track semiconductor consumables. If caught misdeclaring8486items as3824items to save 50% in tariffs, you will face seizure, fines, and potential criminal charges.
✅ 3. Special Cases & Mitigation
| Situation | Handling Advice |
|---|---|
| Multi-use Product (Can be both binder and cleaner) | Provide MSDS showing primary function. If primary use is cleaning, declare 3814. If primary use is coating, declare 3208 or 3824. |
| Export to Non-US Markets | Check if Vietnam/Mexico/Thailand origins allow IEEPA Exemption. If re-exported, ensure no significant transformation occurs in the US to avoid "Transshipment" penalties. |
| Small Samples (< $800) | ❌ No De Minimis Exemption. Due to high tariffs (35%+), even small samples are taxed. Plan for direct payment of duties. |
| Steel/Aluminum Mold Components | If the "wet agent" is applied to steel molds, ensure the Section 232 (50%) tariff doesn't apply to the mold itself, but verify if the agent is considered part of the metal product. |
🌍 Part V: Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff Rate (China Origin) | Certification/Notes |
|---|---|---|---|
| 🇺🇸 USA | 3824.50.00.10 or 3208.10.00.00 |
35% - 38.7% | High Section 301/122 taxes. Semiconductor use = 85%. |
| 🇨🇳 China | 3824.50.00.10 |
5% - 10% | Low base tariff. No retaliatory tariffs. |
| 🇪🇺 EU | 3824.50.00.10 |
0% - 6.5% | No Section 301 equivalent. REACH registration required. |
| 🇲🇽 Mexico | 3824.50.00.10 |
5% - 15% | USMCA may apply if originating in Mexico. |
📌 Conclusion:
- The US market is the most expensive due to Section 301 (25%) and Section 122 (10%) tariffs.
- Semiconductor-related products face the highest barrier (85%).
- Foundry Binders (3824.50) offer the lowest tariff rate (35%) among chemical options.
📌 Part VI: Common Mistakes & Pitfalls (Blood & Tears Lessons)
❌ Mistake 1: Declaring a Semiconductor Consumable as a General Chemical (3824)
👉 Result: Customs audit reveals the product is used in IC manufacturing. Back taxes + penalties totaling 50% difference.
❌ Mistake 2: Declaring a Binder as a Paint (3208)
👉 Result: Rate increases from 35% to 38.7%. Minor difference, but if volume is high, it adds up. Also, paint may require additional environmental filings.
❌ Mistake 3: Ignoring Section 122 Tariff (10%)
👉 Result: Many importers only calculate Section 301 (25%) and forget Section 122 (10%), leading to underpayment and surprise bills.
❌ Mistake 4: Using "Industrial Chemical" as a generic description
👉 Result: Customs will ask for MSDS. If the MSDS shows aromatic solvents, it will be classified as 3814 (41.5%), which is higher than binder codes.
✅ Correct Practice:
"Prepared Binder for Sand Cores, Water-based, Non-Toxic, For Foundry Use Only. HS 3824.50.00.10."
🎯 Part VII: Conclusion: Precise Classification Saves Money!
🎯 Remember the Mantra:
🔹 "Semiconductors = 85% (Avoid if possible!)"
🔹 "Binders = 35% (Best Option)"
🔹 "Paints = 38.7% (Acceptable)"
🔹 "Cleaners = 41.5% (Most Expensive Chemical)"
🔹 "Section 122 is Always 10%!"
📌 Pro Tip:
If your product can be classified as both 3824.50.00.10 (Binder) and 3208.10.00.00 (Paint), choose 3824.50.00.10 to save 3.7% in base tariffs. Document the "binder" function clearly in the MSDS.
📣 Immediate Action:
📞 Consult with a US Customs Broker for an Advance Ruling.
📄 Ensure your MSDS explicitly states the product is a "Binder for Mold Cores" and not a "General Paint."
🚀 Clearance Success Starts with Accurate HS Codes!
✨ Professional Customs Clearance, Starting with Precise Classification!
💼 Every Percentage Point of Tariff Affects Your Bottom Line!
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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.