unsaturated polyester resin hand lay up
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3907912000 | 35.0% | CN | US | Official Doc |
| 3907915000 | 41.5% | CN | US | Official Doc |
| 39076100 | 0.0% | CN | US | Official Doc |
| 39076200 | 0.0% | CN | US | Official Doc |
AI Analysis
π§ͺ Unsaturated Polyester Resin: Hand Lay-Up Grade
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
π I. Product Definition & Classification: Do You Really Understand "Unsaturated Polyester Resin"?
Unsaturated Polyester Resins (UPR) are thermosetting polymers widely used in the manufacturing of fiberglass-reinforced plastics (FRP). In international trade, the classification heavily depends on the form (primary vs. compounded) and the specific application method (e.g., hand lay-up vs. bulk molding).
Hand Lay-Up Resins: Specifically formulated resins for manual application techniques (hand lay-up, spray-up). These are often low-viscosity, modified with styrene, and designed for open-mold processing.
β οΈ Critical Distinction Point:
- If the product is a pure primary form (uncompounded polymer) intended for hand lay-up, it may fall under specific subheadings depending on the exact chemical structure and modification.
- If it is a compounded/prepared resin (mixed with initiators, fillers, or stabilizers for immediate use), it typically falls under "Other Unsaturated Polyesters".
- Allyl Resins are a distinct category (often confused with UPR but chemically different) and have their own HS code.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Reference)
Based on the provided data, here are the relevant HS codes for unsaturated polyester resins, specifically focusing on hand lay-up applications and general unsaturated polyesters.
| HS Code | Product Description | Applicable Scenario | Compounded/Uncompounded? |
|---|---|---|---|
3907.91.20.00 |
Allyl Resins, uncompounded | Note: Often confused with UPR. Allyl resins are polyallyl esters. If your product is truly "Allyl," use this. If it is standard "Unsaturated Polyester," do NOT use this. | β Uncompounded |
3907.91.50.00 |
Other Unsaturated Polyesters (Primary Forms) | General unsaturated polyester resins in primary forms, not specifically allyl. Covers standard UPR precursors. | β Uncompounded (Primary Form) |
3907.61.00 |
Unsaturated Polyesters, whether or not modified with saturated polyesters (Specifically Hand Lay-Up) | Specifically referring to unsaturated polyester resins used for hand lay-up applications. | β Likely Compounded/Modified (Note: Tax retrieval failed in data) |
3907.62.00 |
Other Unsaturated Polyesters (Including Prepared Variations) | Covers variations in formulation not explicitly detailed but falling under the general category of unsaturated polyester resins (e.g., pre-mixed with styrene/initiators for hand lay-up). | β Likely Compounded/Prepared (Note: Tax retrieval failed in data) |
π Key Reminder:
- HS Code3907.61is explicitly linked to "Hand Lay-Up" in the provided data. If your product is strictly for hand lay-up, this is the most accurate description.
- HS Code3907.62is a broader category for "Other unsaturated polyesters," which may include hand lay-up resins if they don't fit the strict definition of3907.61.
- Do NOT confuse with3907.91.20.00(Allyl Resins) unless your product is chemically a polyallyl ester. Standard UPR is not an allyl resin.
π° III. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Add-ons)
β Applicable Country: USA (US)
β Origin: China (CN)
β Effective Date: 2025/2026 (Based on provided data)
π― 1. 3907.91.50.00 ββ Other Unsaturated Polyesters (Primary Forms)
| Item | Content |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Additional Surcharge | 0.0% |
| Total Tax Rate | 0.0% |
| Tax Calculation | CIF Value Γ 0% = $0 |
| De Minimis Eligibility | N/A (Tax is 0%, so no duty paid) |
| Legal Basis Path | USITC:3907.91.50.00 |
π Interpretation:
- This code attracts zero duty.
- This is advantageous for importing primary form unsaturated polyesters (uncompounded) that are not specifically classified as allyl resins or hand-lay-up specific modified resins.
- Caution: If your product is a compound (mixed with styrene, inhibitors, etc.), it may not qualify for this "primary form" code. Misclassification could lead to penalties.
π― 2. 3907.91.20.00 ββ Allyl Resins, Uncompounded
| Item | Content |
|---|---|
| Base Tariff | 0.0% |
| Additional Surcharge | 25.0% |
| Total Tax Rate | 25.0% |
| Tax Calculation | CIF Value Γ 25% |
| De Minimis Eligibility | β Not Eligible (High tax rate) |
| Legal Basis Path | USITC:3907.91.20.00 |
π Interpretation:
- 25% surcharge applies if the product is misclassified as Allyl Resin.
- Do NOT use this code for standard Unsaturated Polyester Resin (UPR) unless it is chemically an allyl resin.
- This high tax rate serves as a deterrent for misclassification.
β οΈ Note on 3907.61.00 and 3907.62.00 (Hand Lay-Up & Other UPR)
The provided data indicates:
"tax": {"tax_detail": "Failed to retrieve tax information", "total_tax": "Error"}π Critical Warning:
- For HS codes3907.61.00and3907.62.00, tax information is not available in the provided dataset.
- DO NOT assume 0% tax. These codes likely have standard MFN (Most Favored Nation) rates, which for chemical products can range from 0% to 5.7%, but could be subject to Section 301 tariffs (25%) if originating from China.
- Recommendation: You MUST verify the exact tax rate with a customs broker or the U.S. International Trade Commission (USITC) database before shipment. Assuming 0% based on3907.91.50.00could be disastrous if your product is actually3907.61.00.
π οΈ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Guide)
β 1. Preparation Checklist (All Required)
| Document | Must Provide | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must explicitly state: "Unsaturated Polyester Resin," viscosity, styrene content, and intended use (e.g., "For Hand Lay-Up Only"). |
| β MSDS (Material Safety Data Sheet) | βοΈ | Required for chemical imports. Confirms hazardous nature (flammable, irritant). |
| β Chemical Structure/Formula | βοΈ | Proves it is NOT an allyl resin (if claiming 3907.91.50.00 or 3907.61.00). |
| β Commercial Invoice | βοΈ | Clearly describe as "Unsaturated Polyester Resin, Hand Lay-Up Grade," NOT "Allyl Resin." |
| β Packing List | βοΈ | Show net/gross weight, volume. |
| β Certificate of Origin (CO) | βοΈ | If claiming preferential rates (though unlikely for UPR from China to US). |
β 2. Declaration Tips (Key Mnemonic)
π₯ βHand Lay-Up is 3907.61, Not 3907.91.20! Verify Tax for 61/62!β
| Scenario | Correct HS Code | Wrong Code | Consequence |
|---|---|---|---|
| Standard UPR, Primary Form | 3907.91.50.00 |
3907.91.20.00 |
25% penalty + back taxes |
| UPR for Hand Lay-Up (Modified) | 3907.61.00 (Verify Tax) |
3907.91.50.00 |
Risk of misclassification if tax is higher |
| Allyl Resin (Not UPR) | 3907.91.20.00 |
3907.61.00 |
25% tax applies |
| Compound Resin (Pre-mixed) | 3907.62.00 (Verify Tax) |
3907.91.50.00 |
"Primary form" misclassification |
β 3. Special Case Handling
| Situation | Handling Advice |
|---|---|
| "Hand Lay-Up" Label on Bottle | Declare as 3907.61.00 if it matches the specific definition. If not, use 3907.62.00. Check tax rate! |
| Contains Styrene | Still classified as Polyester Resin. Styrene is a diluent, not a separate product. |
| Sample Shipment | Still subject to duty. Declare value accurately. |
| Misclassified as "Plastic Sheets" | Never do this. UPR is a liquid resin, not a sheet. |
π V. Global Major Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff Rate | Certification Required | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3907.61.00 or 3907.62.00 |
UNDEFINED (Check USITC) | SDS Required | Do not assume 0%. 3907.91.50.00 is 0% but may not apply. |
| π¨π³ China | 3907.61.00 |
~5-6% | N/A | Import duty applies. |
| πͺπΊ EU | 3907.61.00 |
0% (if REACH compliant) | REACH, SDS | Low duty if REACH registered. |
| π¬π§ UK | 3907.61.00 |
0% | UK REACH | Post-Brexit rules apply. |
π Conclusion:
- USA is the most critical market for tax verification.
- EU/UK have lower tariffs but strict chemical regulations (REACH).
- China is the origin; export duties may apply depending on Chinese policy.
π VI. Common Errors & Pitfall Guide (Blood & Tears Lessons)
β Error 1: Declaring "Hand Lay-Up Resin" as 3907.91.20.00 (Allyl Resin)
π Consequence: 25% Surcharge applied incorrectly. Allyl resins are chemically different.
β Error 2: Declaring "Hand Lay-Up Resin" as 3907.91.50.00 (0% Tax) when it is actually 3907.61.00
π Consequence: If 3907.61.00 has a higher tax (e.g., 5% + 25% Section 301), you will face back taxes, fines, and potential seizure.
π Action: Verify the tax rate for 3907.61.00 and 3907.62.00 in the USITC database. Do not guess.
β Error 3: Omitting "Hand Lay-Up" from Description
π Consequence: Customs may classify as generic "Other Polyester," leading to delays.
β Error 4: Failing to Provide SDS
π Consequence: Shipment Hold. Chemical imports without SDS are rejected at US ports.
β Correct Declaration Example:
"Unsaturated Polyester Resin, Liquid, For Hand Lay-Up Applications, Modified with Styrene, Non-Allyl Type, CAS No. [Insert CAS], Volatile Organic Compound (VOC) Content: XX%"
π― VII. Conclusion: Professional Declaration, Save Time & Money!
π― Remember the Mnemonic:
πΉ "Hand Lay-Up is 3907.61, Not 91.20!"
πΉ "Check Tax for 61/62, Don't Assume Zero!"
πΉ "Allyl is 91.20, UPR is 61/62 or 91.50!"
π Pro Tip:
- Apply for a Binding Ruling (Pre-Decision) from U.S. Customs and Border Protection (CBP) if you are importing large volumes. This locks in the HS code and tax rate, eliminating surprise duties.
- Contact a Licensed Customs Broker to verify the exact tax rate for 3907.61.00 and 3907.62.00 for your specific product origin.
π£ Immediate Action:
π Contact Customs Broker + Provide SDS + Verify USITC Tax Rate for 3907.61/62
π Ensure Smooth Clearance, Avoid 25% Penalties, Maximize Profit!
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Every Dollar Saved in Duty is Pure Profit!
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.