Other Polyimide Boards
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 8534000070 | 35.0% | CN | US | Official Doc |
| 8534000080 | 35.0% | CN | US | Official Doc |
| 3921190090 | 41.5% | CN | US | Official Doc |
| 3921905050 | 39.8% | CN | US | Official Doc |
| 3920995000 | 40.8% | CN | US | Official Doc |
| 3920992000 | 39.2% | CN | US | Official Doc |
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AI Analysis
π Other Polyimide Boards
π HS Code Classification & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Import Strategy
π One Product, Five Critical HS Codes β Know the Difference to Avoid 25%+ Tariffs!
𧩠I. Product Definition & Classification: What Exactly Are "Other Polyimide Boards"?
Polyimide boards are high-performance, heat-resistant, flexible or rigid substrates made from polyimide resin β widely used in flexible printed circuits (FPCs), aerospace electronics, medical devices, and advanced semiconductors.
π Key Distinction:
- If the board is flexible, non-reinforced, and not laminated with other materials β Classified under 8534.00.00.80
- If itβs rigid, non-cellular, and used in printed circuits β May fall under 8534.00.00.70
- If it's not for circuits, but just a structural or insulating plate β Could be 3920.99.50.00 or 3921.19.00.90β οΈ Critical Warning:
Misclassifying a flexible polyimide board as a general plastic sheet can trigger 25%+ additional tariffs β even if itβs not a circuit!
π¦ II. HS Code Breakdown (2026 Official Tariff Table)
| HS Code | Product Description | Use Case | Flexibility | Circuit Use? |
|---|---|---|---|---|
8534.00.00.80 |
Other printed circuits, flexible type | Flexible PCBs, wearable tech, foldable screens | β Yes | β Yes |
8534.00.00.70 |
Printed circuits, plastics impregnated, not flexible type | Rigid PCBs, industrial control boards | β No | β Yes |
3921.19.00.90 |
Other plates, sheets, film, foil, strip, of plastics: Cellular: Of other plastics | Foamed polyimide insulation, thermal pads | β No | β No |
3920.99.50.00 |
Other plates, sheets, film, foil, strip, of plastics, noncellular and not reinforced...: Of other plastics: Other | General polyimide sheets, non-circuit uses | β No | β No |
3920.99.20.00 |
Film, strip and sheets, all the foregoing which are flexible: Other | Thin, flexible polyimide films (e.g., for sensors) | β Yes | β No |
π Pro Tip:
- If it has conductive traces, solder pads, or is used in a circuit β MUST be8534.00.00.70or8534.00.00.80
- If itβs just a flat, flexible film with no electronics β3920.99.20.00or3920.99.50.00
π° III. 2026 Tariff Analysis (US Focus) β Full Tax Breakdown
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: November 10, 2025 (inclusive)
π― 1. 8534.00.00.80 β Flexible Printed Circuits (Polyimide-based)
| Item | Detail |
|---|---|
| Base Duty | 0.0% (ad valorem) |
| USITC Additional Duty | +25.0% (Section 301) |
| IEEPA Additional Duty | +0.0% (not applied to this code) |
| Total Effective Duty | 25.0% |
| Tax Calculation | CIF Value Γ 25.0% |
| De Minimis Threshold | β Not eligible (denied) |
| Legal Basis Path | USITC:8534.00.00.80 β FOOTNOTE:9903.88.01 |
π Explanation:
- This code is exempt from IEEPA (unlike some other electronics), but still subject to 25% Section 301 tariff. - Even if the board is "just" flexible polyimide, if it's used in a circuit β 25% tax applies.
π― 2. 8534.00.00.70 β Rigid Printed Circuits (Plastics Impregnated)
| Item | Detail |
|---|---|
| Base Duty | 0.0% |
| USITC Additional Duty | +25.0% |
| IEEPA Additional Duty | +0.0% |
| Total Effective Duty | 25.0% |
| Tax Calculation | CIF Γ 25.0% |
| De Minimis | β Not eligible |
| Legal Basis | USITC:8534.00.00.70 β FOOTNOTE:9903.88.01 |
π Note:
- Same 25% rate as flexible type β no difference in tariff, only in physical form. - Must be impregnated with plastic and used in circuitry to qualify.
π― 3. 3921.19.00.90 β Cellular Plastic Plates (e.g., Foam Polyimide)
| Item | Detail |
|---|---|
| Base Duty | 0.0% |
| USITC Additional Duty | +0.0% |
| IEEPA Additional Duty | +0.0% |
| Total Effective Duty | 0.0% |
| Tax Calculation | CIF Γ 0.0% |
| De Minimis | β Eligible (if < $800) |
| Legal Basis | 3921.19.00.90 β No footnote |
π Key Insight:
- No additional tariffs if itβs cellular (foamed) and not used in circuits. - Ideal for thermal insulation, gaskets, or cushioning β zero tariff!
π― 4. 3920.99.50.00 β Noncellular, Non-reinforced Plastic Sheets (General Use)
| Item | Detail |
|---|---|
| Base Duty | 0.0% |
| USITC Additional Duty | +0.0% |
| IEEPA Additional Duty | +0.0% |
| Total Effective Duty | 0.0% |
| Tax Calculation | CIF Γ 0.0% |
| De Minimis | β Eligible |
| Legal Basis | 3920.99.50.00 β No footnote |
π Use Case:
- Used as insulating layers, spacers, or structural supports in non-electronic applications. - Zero tariff, highly favorable for non-circuit uses.
π― 5. 3920.99.20.00 β Flexible Film/Strip (Non-Circuit)
| Item | Detail |
|---|---|
| Base Duty | 0.0% |
| USITC Additional Duty | +0.0% |
| IEEPA Additional Duty | +0.0% |
| Total Effective Duty | 0.0% |
| Tax Calculation | CIF Γ 0.0% |
| De Minimis | β Eligible |
| Legal Basis | 3920.99.20.00 β No footnote |
π Ideal For:
- Sensors, optical films, protective layers, or non-conductive coatings. - No circuitry, no traces β 0% tariff!
π οΈ IV. Customs Clearance Best Practices (Avoid 25% Tax Traps!)
β 1. Required Documentation (Must-Have)
| Document | Required? | Why It Matters |
|---|---|---|
| β Product Specification Sheet | βοΈ | Clarifies material, thickness, flexibility, and use |
| β Circuit Diagram / Schematic | βοΈ | Proves whether itβs a printed circuit (β 25% tax) |
| β High-Res Product Photos | βοΈ | Shows traces, pads, and construction |
| β Material Safety Data Sheet (MSDS) | βοΈ | Confirms polyimide composition |
| β Commercial Invoice | βοΈ | Must state "Polyimide Film for Non-Circuit Use" or "Flexible Printed Circuit" |
| β Certificate of Origin (CO) | βοΈ | If from Vietnam/Mexico/Thailand β may qualify for IEEPA exemption |
| β Test Report (e.g., UL, RoHS, IPC) | βοΈ | Supports classification |
β 2.η³ζ₯ζε·§οΌCritical TipsοΌ
π₯ "Trace = Tax, No Trace = Tax-Free!"
| Scenario | Correct HS Code | Wrong Code | Risk |
|---|---|---|---|
| Flexible polyimide with copper traces | 8534.00.00.80 |
3920.99.20.00 |
25% tax + penalties |
| Polyimide film with no electronics | 3920.99.20.00 |
8534.00.00.80 |
Overpaying 25% |
| Rigid polyimide board in a control panel | 8534.00.00.70 |
3920.99.50.00 |
25% tax |
| Foam polyimide for insulation | 3921.19.00.90 |
8534.00.00.70 |
25% tax on non-circuit item |
β 3. Special Cases & Solutions
| Situation | Solution |
|---|---|
| OEM order with custom design | Submit engineering drawings + test reports to prove non-circuit use |
| Used in medical devices (non-circuit) | Declare as 3920.99.50.00 with medical device certification |
| Exporting to EU/Australia | 0% tariffs in most cases β no Section 301 |
| Selling to US with Chinese origin | Apply for pre-ruling to lock in classification |
| Mixed shipment (circuit + film) | Declare separately β donβt combine under one HS code |
π V. Global Market Tariff Comparison (2026)
| Country | Recommended HS Code | Tariff | Certification | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 8534.00.00.80 |
25.0% (if Chinese origin) | FCC, RoHS | 25% Section 301 tariff |
| π¨π³ China | 8534.00.00.80 |
5% | CCC | No extra tariffs |
| πͺπΊ EU | 8534.00.00.80 |
0% | CE | No additional duties |
| π¦πΊ Australia | 8534.00.00.80 |
5% | RCM | No extra tax |
| π―π΅ Japan | 8534.00.00.80 |
0% | PSE | No extra tax |
| π»π³ Vietnam | 8534.00.00.80 |
0% | No IEEPA | IEEPA exemption applies |
π Key Insight:
- Vietnam, Mexico, Thailand, Malaysia origin β 25% tariff may be waived under IEEPA exemptions. - Switching origin can save 25% in customs costs.
π VI. Common Mistakes & How to Avoid Them (Real Cases)
β Mistake 1: Calling a flexible PCB βpolyimide filmβ in the invoice
π Result: Misclassification β 25% tax + penalties
β Mistake 2: Not providing circuit diagrams
π Result: Customs assumes itβs a circuit β 25% tax
β Mistake 3: Using βOther plastic sheetβ as the description
π Result: If itβs actually a flexible circuit β 25% tax applies
β Correct Way to Declare:
"Flexible Polyimide Film, 25Β΅m thick, no conductive traces, for use in sensor insulation, not a printed circuit"
β HS Code:3920.99.20.00β 0% tariff
π― VII. Final Verdict: Precision = Profit
π― Remember the Golden Rule:
πΉ "If it has traces β 25% tax"
πΉ "If it has no traces β 0% tax"
πΉ "If itβs from Vietnam β 0% tax"
π Pro Tip:
β Apply for a Pre-Ruling (Advance Ruling) from U.S. Customs before shipment β lock in the correct HS Code and avoid surprise tariffs.
π£ Take Action Now:
π Contact a licensed customs broker + provide product photos + circuit diagrams
π Get HS Code pre-approval β avoid 25% tax traps β save thousands per shipment
β¨ Smart Classification = Smooth Clearance = Higher Margins!
πΌ Your next shipment shouldnβt pay 25% more than it should.
π Get it right β from the start.
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) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β 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 β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β 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.