Polycarbonate Solar Panel Backsheet
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3921190090 | 41.5% | CN | US | Official Doc |
| 3921905050 | 39.8% | CN | US | Official Doc |
| 3926909989 | 22.8% | CN | US | Official Doc |
AI Analysis
π Polycarbonate Solar Panel Backsheet (PC Backsheet)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
π I. Product Definition & Classification: Do You Really Understand "Polycarbonate Backsheets"?
The Polycarbonate (PC) Solar Panel Backsheet is a critical structural component of photovoltaic (PV) modules. It serves as the rear protective layer, providing electrical insulation, environmental protection (moisture, UV resistance), and mechanical support for solar cells.
In international trade, it is not classified as a finished solar panel (Chapter 85) nor as a simple metal/plastic composite in Chapter 76 or 79. Instead, it is classified under Chapter 39 (Plastics and Articles Thereof) because its primary material is plastic (polycarbonate) and it functions as a sheet/plate rather than a manufactured appliance.
β οΈ Key Distinction:
- If the product is a finished solar panel (complete with cells, glass, frame, junction box) β Chapter 85
- If the product is a raw sheet/roll of polycarbonate (cellular or solid, for fabrication) β Chapter 39
- Most "Backsheets" sold as raw materials for module assembly fall under Chapter 39 unless they are pre-cut/pre-assembled into a specific module format, which is rare in bulk trade.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authoritative Comparison)
Based on the provided data, there are three potential HS Codes for polycarbonate/plastic sheets and other plastic articles. The correct classification depends on the specific structure (cellular vs. solid) and finish (plate/sheet vs. other article).
| HS Code | Product Description | Applicable Scenario | Cellular Structure? |
|---|---|---|---|
3921.19.00.90 |
Other plates, sheets, film, foil and strip, of plastics: Cellular: Of other plastics, Other | Cellular Polycarbonate Sheets (Multi-wall polycarbonate sheets used for glazing or insulation). If the backsheet is a multi-wall PC sheet intended for structural/insulation use. | β Yes (Multi-wall/Hollow) |
3921.90.50.50 |
Other plates, sheets, film, foil and strip, of plastics: Other: Other: Other Other | Solid Polycarbonate Sheets (Standard flat PC sheets used as backsheets before lamination). This is the most common classification for raw PC sheets used in solar manufacturing. | β No (Solid/Flat) |
3926.90.99.89 |
Other articles of plastics and articles of other materials of headings 3901 to 3914: Other: Other Other | Finished/Processed Plastic Articles (e.g., pre-cut, pre-drilled, or custom-shaped backsheet components, or composite backsheets with non-plastic layers that don't fit Chapter 39 headings). Use only if not a simple sheet. | N/A (General Article) |
π Key Reminder:
- Solid PC Sheets (most common for backsheets) β3921.90.50.50
- Multi-wall Cellular PC Sheets β3921.19.00.90
- Custom/Complex Assemblies β3926.90.99.89
- Do NOT classify as solar panels (8541/8543) unless it is a complete, tested PV module.
π° III. 2026 Latest Tariff Rate Details (Including Additional Taxes, Policy Surcharges)
β Applicable Country: USA (US)
β Origin: China (CN)
β Effective Date: 2025/2026 (Subject to current IEEPA/Section 301 rules)
π― 1. 3921.19.00.90 β Cellular Plastic Sheets (Multi-wall Polycarbonate)
| Item | Content |
|---|---|
| Base Tariff | 0.0% (Ad Valorem) |
| Section 301 Additional Tariff | 0.0% |
| IEEPA Additional Tariff | 0.0% |
| Total Tariff | 0.0% |
| Tax Calculation | CIF Value Γ 0.0% = $0 |
| De Minimis Eligibility | β No (Standard trade rules apply; no de minimis for Section 301/IEEPA goods) |
| Legal Path | USITC:3921.19.00.90 β No Footnotes triggering surcharges |
π Explanation:
- Cellular polycarbonate sheets are often considered "non-consumer electronics" or "building materials" in some contexts, and currently, no additional Section 301 or IEEPA surcharges are listed for this specific 8-digit code in the provided data.
- Result: Zero Duty. Highly favorable for importers.
π― 2. 3926.90.99.89 β Other Plastic Articles (Non-Sheet Forms)
| Item | Content |
|---|---|
| Base Tariff | 0.0% (Ad Valorem) |
| Section 301 Additional Tariff | 0.0% |
| IEEPA Additional Tariff | 0.0% |
| Total Tariff | 0.0% |
| Tax Calculation | CIF Value Γ 0.0% = $0 |
| De Minimis Eligibility | β No |
| Legal Path | USITC:3926.90.99.89 β No Footnotes triggering surcharges |
π Explanation:
- This code captures "other" plastic articles not specified elsewhere. Since no additional taxes are applied, the total duty remains 0.0%.
- Result: Zero Duty.
π― 3. 3921.90.50.50 β Other Plastic Plates/Sheets (Solid Polycarbonate)
| Item | Content |
|---|---|
| Base Tariff | 4.8% (Ad Valorem) |
| Section 301 Additional Tariff | 25.0% |
| IEEPA Additional Tariff | 0.0% (Note: Data shows total 29.8%, implying 4.8% + 25.0%) |
| Total Tariff | 29.8% |
| Tax Calculation | CIF Value Γ 29.8% |
| De Minimis Eligibility | β No |
| Legal Path | USITC:3921.90.50.50 β FOOTNOTE:301 (Section 301 List 4C/4D typically applies to plastics) |
π Critical Warning:
- This is a high-tariff item.
- The 25% Section 301 tariff is a punitive trade tariff on Chinese goods.
- Total Cost Impact: For a $100,000 shipment, you pay $29,800 in duties alone.
- Risk: High. Misclassification here can lead to severe penalties and cash flow issues.
π οΈ IV. Customs Clearance Practical Advice (Combat Avoidance Guide)
β 1. Documentation Checklist (Non-Negotiable)
| Document | Required? | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must state: Material (100% Polycarbonate? Composite?), Thickness, Width, Cellular/Solid structure. |
| β Composition Analysis | βοΈ | If composite (e.g., PC + PET + Aluminum Foil), must declare % by weight. If >50% plastic by weight, likely Chapter 39. |
| β Commercial Invoice | βοΈ | Clearly describe as "Polycarbonate Sheet for Solar Panel Backsheet" or "PC Backsheet Material". Avoid "Solar Panel Part" if possible to avoid Chapter 85 scrutiny. |
| β Packing List | βοΈ | Include net/gross weight, dimensions, and packaging type (rolls, sheets, pallets). |
| β Certificate of Origin | βοΈ | Required for Section 301 determination. Must be from China to trigger potential 25% tariff. |
| β Photos of Product | βοΈ | Show surface texture, cross-section (to prove cellular vs. solid), and any branding. |
β 2. Classification Strategy (Key Mantra)
π₯ "Sheet or Cell? Solid or Multi? 0% or 30%?"
| Scenario | Correct HS Code | Tariff Rate | Action |
|---|---|---|---|
| Multi-wall PC Sheet (Hollow, like greenhouse panels) | 3921.19.00.90 |
0.0% | β Ideal. Verify cellular structure with photos. |
| Solid PC Sheet (Flat, used as backing) | 3921.90.50.50 |
29.8% | β οΈ High Cost. Consider if any physical modification can shift it to "other" (risky) or if supplier can provide cellular alternative. |
| Pre-cut/Drilled/Assembled Backsheet | 3926.90.99.89 |
0.0% | β Strategic Option. If the backsheet is already cut to size, drilled, or has adhesive layers applied, it may be considered an "article" rather than a "sheet," potentially avoiding the 25% surcharge. Consult counsel first. |
π Pro Tip:
- If your product is a composite (e.g., PET + Aluminum + PC), and the PC layer is the primary value-adder, customs may still classify it under Chapter 39 if the plastic layer provides essential characteristics.
- Avoid describing it as "Solar Panel Component" in the invoice if it is just a raw sheet. Use "Polycarbonate Sheet, for Solar Module Assembly."
β 3. Special Circumstances Handling
| Scenario | Handling Advice |
|---|---|
| Composite Backsheet (PC + Aluminum Foil + PET) | Declare the principal material. If PC is dominant, use 3921. If aluminum foil is dominant, it might shift to Chapter 76 (Aluminum). Chapter 76 may have different tariffs. Get a pre-ruling. |
| OEM Custom Backsheet | Provide end-customer agreement and design specs. If itβs a unique shape, argue for 3926.90.99.89 (Other Article) to potentially avoid the 29.8% if 0.0% applies. |
| Transshipment | If shipped from Vietnam/Malaysia, Certificate of Origin must prove substantial transformation. Simply relabeling Chinese goods will not avoid Section 301 tariffs. |
| De Minimis (Section 321) | β Not Applicable. Section 301 and IEEPA tariffs exclude de minimis shipments. All shipments are subject to full duty assessment. |
π V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification | Remarks |
|---|---|---|---|---|
| πΊπΈ USA | 3921.19.00.90 or 3926.90.99.89 |
0.0% | N/A | Best route. Avoid 3921.90.50.50 due to 29.8% duty. |
| πΊπΈ USA | 3921.90.50.50 |
29.8% | N/A | High risk. Only if product is strictly solid sheet and cannot be classified elsewhere. |
| πͺπΊ EU | 3921.11.00 or 3921.90.90 |
6.5% (Standard MFN) | CE, REACH | No Section 301 equivalent, but standard EU duty applies. |
| π¨π³ China | 3921.90.50.50 |
4.8% | CCC (if applicable) | Import duty is lower, but consider export tax from China. |
| π»π³ Vietnam | 3921.90.50.50 |
0% (if FTZ) | N/A | Consider sourcing from Vietnam if manufacturing happens there. |
π Conclusion:
- USA Market: Avoid3921.90.50.50if possible. The 29.8% tariff is prohibitive.
- Strategy: Try to classify as Cellular (3921.19.00.90) or Other Article (3926.90.99.89) to achieve 0% duty.
- Documentation is Key: Prove the cellular nature or the "article" status (not just a raw sheet).
π VI. Common Errors & Pitfalls (Blood Lessons)
β Error 1: Classifying all polycarbonate backsheets under 3921.90.50.50
π Consequence: Pay 29.8% duty unnecessarily.
π Fix: Check if the product is multi-wall (cellular) or pre-processed to qualify for 0% codes.
β Error 2: Describing as "Solar Panel" on Invoice
π Consequence: Customs may divert to Chapter 85 (Solar Panels), triggering 0% base but potential anti-dumping duties (AD/CVD) if applicable, or complex licensing.
π Fix: Describe as "Polycarbonate Sheet for Solar Module Assembly."
β Error 3: Ignoring Composite Material Nature
π Consequence: If aluminum foil is dominant, Chapter 39 may be challenged, leading to re-classification under Chapter 76 (Aluminum), which has different tariffs and potential AD/CVD.
π Fix: Provide detailed material breakdown and weight percentage.
β Error 4: Assuming De Minimis Applies
π Consequence: Small shipments are still taxed for Section 301/IEEPA goods.
π Fix: Plan for duty payment even for small samples.
β Correct Approach:
"Polycarbonate Sheet, Cellular, 10mm, Multi-wall, For Solar Panel Backing, Model XYZ, Certified"
π― VII. Conclusion: Professional Classification, Cost Saving, Efficiency!
π― Remember the Mantra:
πΉ "Cellular is Zero, Solid is Thirty, Article is Zero, Sheet is Risk!"
πΉ "Check the Structure, Declare the Material, Avoid the 29.8% Trap!"
π Pro Tip:
- If your product is a composite backsheet (e.g., PET/Al/PC), and the PC layer is thin, customs may classify it under Chapter 56 (Non-wovens) or Chapter 39 depending on the principal material. Get a Binding Tariff Information (BTI) or Advance Ruling from US CBP if the value is high.
- Pre-shipment Inspection: Provide photos of the cross-section to prove cellular vs. solid structure.
π£ Immediate Action:
π Contact a Licensed Customs Broker + Provide Product Samples/Photos + Apply for Advance Ruling
π Ensure Your Polycarbonate Backsheets Clear Smoothly, Minimize Duty, and Maximize Profit!
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Every Percent of Duty Saved is Pure Profit!
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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) 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.