Natural Gas Based High Strength Adhesive
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3506990000 | 37.1% | CN | US | Official Doc |
| 3824994900 | 41.5% | CN | US | Official Doc |
| 3824999397 | 40.0% | CN | US | Official Doc |
| 3506915000 | 37.1% | CN | US | Official Doc |
| 3911100000 | 41.1% | CN | US | Official Doc |
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AI Analysis
ποΈ Natural Gas Based High Strength Adhesive (倩ηΆζ°εΊζΉζ§θΆη²ε)
π HS Code Reference & Customs Clearance Guide | 2026 Tariff Structure Analysis | Professional Entry Strategy
π I. Product Definition & Classification: Do You Really Understand "Natural Gas-Based Adhesives"?
"Natural Gas Based High Strength Adhesive" refers to adhesive products where the core raw material is derived from hydrocarbons extracted from natural gas. In international trade, these products are complex because they can fall under different categories depending on their chemical nature (resin vs. prepared glue) and specific application (casting vs. general bonding).
Key Distinction Points:
- Prepared Adhesives (HS 3506): If the product is a finished, ready-to-use glue formulation based on chemical bases.
- Modified Chemical Products/Resins (HS 3824/3911): If the product is a specific chemical preparation, resin, or binder used in industrial processes (like casting) rather than a general-purpose consumer glue.
β οΈ Critical Warning:
Misclassification can lead to significant tariff discrepancies (ranging from 37.1% to 41.5%). The key lies in whether the product is defined as a "prepared adhesive" (Chapter 35) or a "chemical product/preparation" (Chapter 38/39).
π¦ II. HS Code Classification Details (2026 Latest Tariff Correlation)
Based on the provided data for "Natural Gas Based High Strength Adhesive," here are the five specific classifications and their corresponding tax structures:
| HS Code | Product Description & Classification Logic | Primary Tax Rate |
|---|---|---|
3506.99.00.00 |
Natural Gas Based Modified Adhesive: Core material is adhesive, fitting the attribute of prepared adhesives. | 37.1% |
3824.99.49.00 |
Natural Gas Based Modified Adhesive: Derived from natural gas hydrocarbons, fitting the use of modified binders (chemical preparations). | 41.5% |
3824.99.93.97 |
Natural Gas Based Modified Adhesive: Classified as chemical products and preparations, fitting the definition of other categories. | 40.0% |
3506.91.50.00 |
Natural Gas Based Modified Adhesive: Other class of adhesives based on hydrocarbon polymers. | 37.1% |
3911.10.00.00 |
Natural Gas Based Investment Casting Binder: Classified as resin raw materials of a chemical nature (specifically for investment casting). | 41.1% |
π Key Insight:
- Codes3506imply general prepared adhesives (lower base tariff).
- Codes3824and3911imply specialized chemical resins/binders (higher base tariff).
- The total tax burden is heavily influenced by the Base Tariff component before adding additional duties.
π° III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN) (Implied by the specific surtax structure)
β Effective Time: 2025 onwards
The total tax rate consists of three components: Base Tariff, Section 301 Surtax, and Section 122 Tariff.
π― 1. 3506.99.00.00 & 3506.91.50.00 ββ Prepared Adhesives / Hydrocarbon Polymer Adhesives
| Item | Content |
|---|---|
| Base Tariff | 2.1% (Ad valorem) |
| Section 301 Surtax | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 37.1% |
| Calculation Method | CIF Value Γ 37.1% |
| De Minimis Exemption | β Not Eligible (Due to surtaxes) |
| Legal Basis Path | Base Tariff: 2.1% β Sec 301: 25% β Sec 122: 10% |
π Explanation:
- These codes fall under Chapter 35 (Albuminoidal substances; modified starches; glues...).
- The base tariff is low (2.1%), but the aggressive surtaxes (25% + 10%) push the total to 37.1%.
- Why this code? If the product is marketed strictly as a "premixed adhesive" for general industrial use, this is the most common classification, but it is still expensive.
π― 2. 3824.99.49.00 ββ Modified Binders (Hydrocarbon Origin)
| Item | Content |
|---|---|
| Base Tariff | 6.5% (Ad valorem) |
| Section 301 Surtax | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 41.5% |
| Calculation Method | CIF Value Γ 41.5% |
| De Minimis Exemption | β Not Eligible |
| Legal Basis Path | Base Tariff: 6.5% β Sec 301: 25% β Sec 122: 10% |
π Explanation:
- This code falls under Chapter 38 (Miscellaneous chemical products).
- The base tariff is higher (6.5%) because it is classified as a specific chemical preparation rather than a simple glue.
- Risk: This is the highest total tax rate (41.5%). Avoid this classification unless the product's technical nature strictly requires it (e.g., specific chemical binding agents).
π― 3. 3824.99.93.97 ββ Other Chemical Preparations
| Item | Content |
|---|---|
| Base Tariff | 5.0% (Ad valorem) |
| Section 301 Surtax | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 40.0% |
| Calculation Method | CIF Value Γ 40.0% |
| De Minimis Exemption | β Not Eligible |
| Legal Basis Path | Base Tariff: 5.0% β Sec 301: 25% β Sec 122: 10% |
π Explanation:
- A "catch-all" category for chemical products not specified elsewhere.
- Slightly better than3824.99.49.00but worse than Chapter 35 codes. Use only if no other specific chemical description fits.
π― 4. 3911.10.00.00 ββ Investment Casting Binders (Resin Origin)
| Item | Content |
|---|---|
| Base Tariff | 6.1% (Ad valorem) |
| Section 301 Surtax | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 41.1% |
| Calculation Method | CIF Value Γ 41.1% |
| De Minimis Exemption | β Not Eligible |
| Legal Basis Path | Base Tariff: 6.1% β Sec 301: 25% β Sec 122: 10% |
π Explanation:
- Specific to investment casting (lost-wax casting) binders.
- If your adhesive is exclusively used for metal casting molds, this is the correct technical classification.
- Note: Despite being "Chapter 39" (Plastics), it is taxed similarly to Chapter 38 products due to the high base rate.
π οΈ IV. Customs Clearance Practical Advice (Avoiding Pitfalls)
β 1. Essential Documentation Checklist
| Document | Mandatory? | Notes |
|---|---|---|
| β Technical Data Sheet (TDS) | βοΈ | Must clearly state: "Derived from Natural Gas Hydrocarbons," chemical composition, and intended use (General Adhesion vs. Casting). |
| β Formulation/Ingredient List | βοΈ | To prove if it is a "prepared adhesive" (Ch 35) or "chemical preparation" (Ch 38). |
| β Certificate of Origin (CO) | βοΈ | Crucial for determining if Section 301/122 surtaxes apply (China origin). |
| β Commercial Invoice | βοΈ | Must explicitly state "Natural Gas Based Adhesive" and HS Code. |
| β MSDS (Material Safety Data Sheet) | βοΈ | Required for chemical safety clearance. |
| β Packing List | βοΈ | Details net/gross weight for duty calculation. |
β 2. Declaration Strategy (Key Tips)
π₯ "Classify by Use, Declare by Chemistry!"
| Scenario | Recommended HS Code | Reason |
|---|---|---|
| General Industrial Glue | 3506.99.00.00 or 3506.91.50.00 |
Lower base tariff (2.1%). Best if the product is a ready-to-use glue. |
| Specific Casting Binder | 3911.10.00.00 |
Mandatory if used for investment casting. Do not force it into Ch 35. |
| Special Chemical Resin | 3824.99.49.00 |
Use only if it is a specific chemical binder, not a simple glue. |
| Unspecified Chemical Prep | 3824.99.93.97 |
Use as a last resort if no other category fits. |
π Warning:
- Do not arbitrarily choose3506if the product is technically a resin or casting binder. Customs may reclassify it, leading to penalties.
- Do not claim "De Minimis" (Section 321) exemption. The 25% Section 301 surtax blocks this exemption for Chinese-origin goods.
β 3. Special Handling & Risk Mitigation
| Situation | Handling Advice |
|---|---|
| Customs Audit | Provide lab tests proving the "Natural Gas" origin and "Hydrocarbon" nature to support the Ch 38/39 classification if challenged. |
| Tariff Optimization | If possible, explore if the product can be classified under 3506 (37.1%) rather than 3824 (41.5%). This saves 4.4% in duties. |
| Supply Chain Shift | If sourcing from Vietnam or Thailand, check for EO (Enterprise Obligation) or free trade agreement benefits to avoid Section 301 surtaxes. |
| Labeling | Ensure labels clearly state "Not for Consumer Use" if it's an industrial chemical, to avoid consumer product regulations. |
π V. Global Market Comparison (2026)
| Country/Region | Recommended HS Code | Base Tariff | Surtaxes | Total Effective Rate (CN Origin) |
|---|---|---|---|---|
| πΊπΈ USA | 3506.99.00.00 |
2.1% | 35% (25+10) | 37.1% |
| πΊπΈ USA | 3824.99.49.00 |
6.5% | 35% (25+10) | 41.5% |
| πͺπΊ EU | Varies (3506/3824) | ~0-6.5% | None | ~0-6.5% (No Section 301) |
| π¨π³ China | 3506/3824 | Varies | None | Low (Import duty only) |
| π»π³ Vietnam | Varies | ~0-5% | None | Low (If re-exported, check rules of origin) |
π Conclusion:
The US market is the most expensive due to theε ε (stacking) of Section 301 and Section 122 tariffs.
- USA: ~37-41.5% total tax.
- EU/Global: Significantly lower (no punitive surtaxes).
- Strategy: If exporting to the US, ensure precise HS classification to avoid the highest bracket (41.5%). Consider supply chain diversification if volume is high.
π VI. Common Errors & Pitfalls (Lessons Learned)
β Error 1: Classifying "Casting Binder" as "General Glue" (3506)
π Consequence: Customs reclassifies to 3911 or 3824 β Penalty + Back Taxes.
β Error 2: Claiming De Minimis (Under $800) Exemption
π Consequence: Blocked! Section 301 surtaxes explicitly exclude de minimis exemptions for Chinese goods.
β Error 3: Vague Description ("Adhesive") on Invoice
π Consequence: Customs holds the shipment for extra scrutiny β Delayed clearance + Storage fees.
β Error 4: Ignoring "Section 122" Tariff
π Consequence: Under-declaring tax β Audit & Fines. The 10% Section 122 tariff is mandatory for many chemical products from China.
β Correct Approach:
"Natural Gas-Based Modified Adhesive, Hydrocarbon Polymer, for Industrial Bonding, HS 3506.99.00.00, Origin: China, 37.1% Total Duty"
π― VII. Conclusion: Professional Declaration, Cost Control!
π― Remember the Golden Rule:
πΉ "Chapter 35 is Cheaper, Chapter 38 is Specific."
πΉ "301 + 122 = 35% Surtax. No De Minimis. No Excuses."
πΉ "Verify the Chemical Nature. Don't Guess the Code."
π Pro Tip:
If your product is a resin precursor rather than a finished glue, consult a customs broker to see if it fits 3911.10.00.00 (41.1%) or if it can be argued as 3506.99.00.00 (37.1%) based on its final use. The 4.4% difference is significant for large volumes.
π£ Action Required:
π Contact a Licensed Customs Broker + Provide TDS/MSDS + Verify HS Code Pre-Ruling
π Ensure Smooth US Customs Clearance and Maximize Profit Margins!
β¨ Professional Clearance Starts with Accurate Classification!
πΌ Every Percent of Tariff Counts!
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.