高纯度石墨烯分散液
CN → USAI Analysis
🧪 High-Purity Graphene Dispersion (Liquid Graphene)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Clearance Strategy
📌 I. Product Definition & Classification: Do You Really Understand "Graphene Dispersion"?
High-Purity Graphene Dispersion refers to a stable suspension of single-layer or few-layer graphene sheets in a solvent (such as NMP, water, ethanol, or epoxy resin). It is not a solid powder but a liquid material used in advanced coatings, conductive inks, composite materials, and battery electrodes.
In international trade, classification depends heavily on: 1. The Solvent Base: Is it primarily a chemical solution or a material preparation? 2. Graphene Content & Purity: High purity (>95%) often triggers different chemical vs. material classification debates. 3. End-Use: Conductive vs. structural applications.
⚠️ Key Distinction Point:
- If it is a solution of graphene in a specific chemical solvent for chemical processing → Likely Chapter 38 (Miscellaneous Chemical Products) or Chapter 32 (Dyestuffs/Pigments) if treated as a pigment.
- If it is considered a prepared material or nanomaterial → Likely Chapter 38 under specific headings for nanomaterials or other prepared chemical products.
- Solid Graphene Powder would fall under 3824.99 or 8545.11, but Liquid Dispersion is almost exclusively classified under 3824.99.99 or 3215.90 depending on the exact composition and function.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Graphene State | Solvent Type |
|---|---|---|---|---|
3824.99.99.00 |
Other prepared binders for foundry molds/core; other chemical products and preparations (incl. nanomaterials) | Most Common: Graphene dispersion in organic solvents (NMP, etc.) for coatings/adhesives | Liquid | Organic (NMP, DMF, etc.) |
3215.90.00.00 |
Printing inks and other inks (whether or not concentrated or solid), paints and varnishes... | If formulated primarily as conductive ink for printing circuits | Liquid | Water/Alcohol/Epoxy |
3824.72.00.00 |
Nanomaterials (specifically if declared and recognized as such in some jurisdictions) | If explicitly declared as "Nanomaterial" and local law allows specific nanomaterial heading | Liquid | Any |
3906.90.00.00 |
Acrylic polymers in primary forms; other plastics | If graphene is added as a filler in a liquid plastic resin (epoxy/polyurethane prepolymer) | Liquid (Mixed with Resin) | Resin-based |
8545.11.00.00 |
Graphite, whether or not mixed with other substances, in the form of powder or paste | Solid Paste Only: Not applicable for liquid dispersions | Solid/Paste | N/A |
🔍 Critical Reminder:
-3824.99.99.00is the most widely accepted HS Code for general high-purity graphene dispersions globally (US, EU, China).
- If the product is specifically marketed as "Conductive Ink", customs may force classification under3215.90.00.00.
- Avoid8545.11(Graphite Electrodes/Powder) — this is for solid graphite, not liquid dispersion. Misclassification leads to huge duty differences.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes, Policy Surcharges)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: November 10, 2025 onwards (including subsequent imports)
🎯 1. 3824.99.99.00 —— Graphene Dispersion (Miscellaneous Chemical Product)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.7% (ad valorem) |
| Section 301 Tariff (Footnote 9903.88.01) | +25% |
| IEEPA Additional Tariff | +10% (for China/HK products, effective Nov 10, 2025) |
| Total Tariff Rate | 40.7% |
| Tax Calculation | CIF Value × 40.7% |
| De Minimis Exemption Available? | ❌ No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3824.99.99.00 → FOOTNOTE:9903.88.01 |
📌 Explanation:
- The 25% Section 301 tariff applies to "All other goods" from China, including chemical preparations.
- The 10% IEEPA tariff is a new layer added in late 2025 targeting high-tech and advanced materials from China.
- Total 40.7% is a very high cost. Graphene dispersion is considered a strategic material, and exemptions are rare.
🎯 2. 3215.90.00.00 —— Conductive Ink (If Classified as Ink)
| Item | Content |
|---|---|
| Base Tariff Rate | 0% |
| Section 301 Tariff | +25% |
| IEEPA Additional Tariff | +10% |
| Total Tariff Rate | 35% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Exemption Available? | ❌ No |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3215.90.00.00 |
📌 Note:
- If your product can be legally argued as "Conductive Ink" rather than "Chemical Preparation," you might save 5.7% on the base rate.
- However, US Customs and Border Protection (CBP) often scrutinizes this classification. If it’s not printed directly as ink but used as a coating additive,3824.99.99.00is safer.
🛠️ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Avoidance Guide)
✅ 1. Required Documents Checklist (Non-Negotiable)
| Document | Mandatory | Explanation |
|---|---|---|
| ✅ Material Safety Data Sheet (MSDS) | ✔️ | Critical for chemical products. Must list solvent (e.g., NMP) and graphene concentration. |
| ✅ Certificate of Analysis (CoA) | ✔️ | Must confirm Graphene Content (%), Layer Count (1-3 layers vs. multi-layer), and Purity (>95%). |
| ✅ Product Specification Sheet | ✔️ | Details: Viscosity, Solvent Type, Conductivity, Application Method (Spray/Brush/Print). |
| ✅ Commercial Invoice | ✔️ | Clearly state: "Graphene Dispersion, Not a Finished Good, Used as Raw Material for Coatings." |
| ✅ Bill of Lading (B/L) | ✔️ | Ensure harmonized description matches invoice. |
| ✅ Non-Dangerous Goods Certificate | ✔️ | If solvent is flammable, may require IMDG code. Otherwise, confirm non-hazardous. |
✅ 2. Declaration Tips (Key Mantra)
🔥 "Chemical Prep, Not Graphite Powder; Specify Solvent, Avoid Confusion!"
| Situation | Correct Declaration | Wrong Practice |
|---|---|---|
| Graphene in NMP/Water | 3824.99.99.00 "Graphene Dispersion in Solvent" |
Declare as "Graphite Powder" → Smuggling/Incorrect HS |
| Conductive Ink for Printing | 3215.90.00.00 "Conductive Ink" |
Declare as "General Chemical" → Possible Audit |
| Mixed with Epoxy Resin | 3906.90.00.00 "Plastic Resin with Filler" |
Declare as "Pure Graphene" → Misdeclaration |
| Solid Graphene Powder | 8545.11.00.00 |
Declare as "Dispersion" → Customs Rejection |
✅ 3. Special Case Handling
| Situation | Handling Advice |
|---|---|
| High Purity (>99%) | Emphasize "Electronic Grade" or "Semiconductor Grade" in docs to justify strategic material status. |
| Flammable Solvent (NMP/Ethanol) | Must declare as Class 3 Flammable Liquid if flash point <60°C. May require specialized container and declaration. |
| Nanomaterial Declaration | If US law requires nanomaterial listing, ensure MSDS includes "Nano-form" section. |
| Dual-Use Items | Graphene can be dual-use (civilian/military). Ensure end-user certificate if required by BIS (Bureau of Industry and Security). |
🌍 V. Global Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3824.99.99.00 |
40.7% | MSDS, CoA, IEEPA Compliance | High duty due to IEEPA + 301. |
| 🇨🇳 China | 3824.99.90.00 |
5-6% | MSDS, Safety Labeling | No IEEPA surcharge domestically. |
| 🇪🇺 EU | 3824.99.90 |
0-2% | REACH Registration, SDS | REACH registration mandatory for nanomaterials. |
| 🇬🇧 UK | 3824.99.90 |
2-5% | UK REACH, Safety Data Sheet | Post-Brexit, UK REACH applies. |
| 🇯🇵 Japan | 3824.99.90 |
0-6% | Chemical Substances Control Law | Strict nano-material tracking. |
📌 Conclusion:
- USA has the highest tariff burden (40.7%) due to political tariffs.
- EU and Japan focus on Environmental/Safety Compliance (REACH, etc.) rather than high tariffs.
- China is the main production hub, but exports to US face severe cost penalties.
📌 VI. Common Mistakes & Pitfalls (Blood & Tears Lessons)
❌ Mistake 1: Declaring as "Graphite Electrode" or "Graphite Powder"
👉 Consequence: CBP will reject because it’s a liquid. Duty penalty + delay.
👉 Reality: Liquid dispersion is a chemical preparation, not elemental graphite.
❌ Mistake 2: Omitting Solvent Information
👉 Consequence: If solvent is hazardous (e.g., NMP), customs may flag for environmental violations.
👉 Reality: Always disclose solvent type and concentration.
❌ Mistake 3: Using "Graphene" as the sole product name
👉 Consequence: Ambiguity. Customs may classify as unlisted chemical → Higher duty.
👉 Reality: Use precise names: "Graphene Dispersion in NMP, 1% Concentration."
❌ Mistake 4: Ignoring IEEPA 10% Surcharge
👉 Consequence: Underpaying duties by 10% → Audit & Back Taxes.
👉 Reality: Effective Nov 10, 2025, all Chinese-origin high-tech materials face this +10%.
✅ Correct Practice:
"Graphene Dispersion, Liquid, High Purity (>95%), Single-Layer, in NMP Solvent, 1% Graphene Content, For Conductive Coatings, MSDS Attached, HS Code 3824.99.99.00"
🎯 VII. Conclusion: Professional Declaration, Cost Control, Risk Mitigation!
🎯 Remember the Mantra:
🔹 "Liquid is Chemical, Not Powder; 40% Duty in USA, Plan Ahead!"
🔹 "MSDS is Key, Solvent Matters, IEEPA Hits Hard on Nov 10!"
📌 Pro Tips:
- If your graphene dispersion is used in battery electrodes, consider if it qualifies as a "Part of Battery" under Chapter 85, but this is rare and risky. Stick to 3824.
- For EU exports, ensure REACH registration is complete before shipment. Non-compliance leads to seizure.
- For US exports, calculate the 40.7% duty into your pricing model. Consider transshipment via Vietnam/Malaysia (if legally compliant with Rules of Origin) to mitigate IEEPA tariffs, but beware of anti-circumvention investigations.
📣 Immediate Action:
📞 Engage a Customs Broker specializing in chemical/nanomaterials.
📄 Prepare MSDS & CoA with exact graphene concentration.
🚀 Apply for Advance Ruling (CBP) if shipment value is high, to secure HS Code certainty.
✨ Professional Customs Clearance Starts with Precise Classification!
💼 Your High-Purity Graphene Deserves Accurate Duty Calculation!
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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.