Corrosion Resistant Adhesive
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3913901000 | 35.0% | CN | US | Official Doc |
| 3911909110 | 41.5% | CN | US | Official Doc |
| 3911909150 | 41.5% | CN | US | Official Doc |
| 3907100000 | 41.5% | CN | US | Official Doc |
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π‘οΈ Corrosion Resistant Adhesive: Global HS Code Classification & 2026 Tariff Strategy
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Entry Strategy
π 1. Product Definition & Classification: Do You Really Understand "Corrosion Resistant Adhesives"?
Corrosion-resistant adhesives are high-performance bonding agents designed to maintain structural integrity and chemical stability in harsh environments (acids, alkalis, salts, solvents). In international trade, they are primarily classified under Chapter 39 (Plastics and Articles Thereof) or Chapter 35 (Albuminoidal Substances...) depending on their chemical base.
However, for synthetic/polymers based corrosion-resistant adhesives, the classification heavily relies on whether they are "Natural Polymers Modified" or "Unlisted Resins/Polymer Preparations."
β οΈ Critical Distinction Point: - If the adhesive is primarily a modified natural polymer (e.g., modified starch, gelatin, or rubber) with corrosion-resistant additives β Consider 3913.90.10.00. - If the adhesive is a synthetic resin/polymer preparation (e.g., epoxy, polyether, phenolic, or unlisted polymer mixes) β Consider 3911.90.91.x0 or 3907.10.00.00.
π¦ 2. HS Code Classification Details (Based on Provided Data)
The following table details the specific HS Codes, summaries, and tax implications strictly derived from the provided data context.
| HS Code | Summary & Applicability | Key Characteristics |
|---|---|---|
| 3913.90.10.00 | Modified Natural Polymers: Corrosion-resistant polymers classified as natural polymers and their modified forms, fitting the corrosion-resistant attribute. | Best for adhesives based on modified natural bases (e.g., modified starch/resin) with corrosion resistance. |
| 3911.90.91.10 | Unlisted Resins/Plastic Materials: Corrosion-resistant polymers belonging to plastic/resin material types, fitting petroleum resins, polysulfides, etc. | Ideal for synthetic resin-based adhesives (e.g., petroleum-based, polysulfide sealants/adhesives). |
| 3911.90.91.50 | Unlisted Primary Forms of Resins: Corrosion-resistant polymers belonging to resin-type primary shape products, fitting unlisted resin forms. | Suitable for raw resin-based adhesive preparations that don't fit specific listed subheadings. |
| 3907.10.00.00 | Polyacetals, Polyethers, Epoxy Resins: Corrosion-resistant polymers belong to the broad category of polyacetals, polyethers, epoxy resins, etc., with consistent material attributes. | Specific to epoxy, polyether, or polyacetal-based corrosion-resistant adhesives. |
π Key Reminder: - 3913.90.10.00 has a lower total tax rate (35.0%) compared to the 3911 and 3907 codes (41.5%). - Classification depends on the chemical composition (natural vs. synthetic) and specific polymer type (epoxy vs. general resin).
π° 3. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: 2025/2026 (Current Trade Policy Context)
π― 1. 3913.90.10.00 ββ Modified Natural Polymers (Corrosion Resistant)
| Item | Detail |
|---|---|
| Base Tariff | 0.0% (Ad Valorem) |
| Retaliatory Tariff (Section 301) | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tariff Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Exemption | β Not Eligible (Standard rules apply) |
| Legal Basis Path | USITC:3913.90.10.00 β Section 301: 25% β Section 122: 10% |
π Explanation:
- This code benefits from a 0% base duty, making it the most cost-effective option among the listed codes. - However, the 35% combined additional tax still significantly impacts profit margins. - Ideal for natural polymer-based corrosion-resistant adhesives (e.g., modified starch or protein-based industrial adhesives).
π― 2. 3911.90.91.10 & 3911.90.91.50 ββ Unlisted Resins & Plastics
| Item | Detail |
|---|---|
| Base Tariff | 6.5% (Ad Valorem) |
| Retaliatory Tariff (Section 301) | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption | β Not Eligible |
| Legal Basis Path | USITC:3911.90.91.xx β Section 301: 25% β Section 122: 10% |
π Note:
- Both subcodes (...10and...50) share the same tax structure. - The 6.5% base tariff increases the total burden to 41.5%. - Applicable to synthetic petroleum resins, polysulfides, and other unlisted resin preparations.
π― 3. 3907.10.00.00 ββ Epoxy/Polyether Resins
| Item | Detail |
|---|---|
| Base Tariff | 6.5% (Ad Valorem) |
| Retaliatory Tariff (Section 301) | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption | β Not Eligible |
| Legal Basis Path | USITC:3907.10.00.00 β Section 301: 25% β Section 122: 10% |
π Note:
- Specifically for epoxy, polyacetals, and polyethers. - High-performance corrosion-resistant adhesives often fall here. - Same high tax rate (41.5%) as the 3911 group due to the 6.5% base duty.
π οΈ 4. Customs Clearance Practical Advice (Avoiding Pitfalls)
β 1. Required Documentation Checklist
| Document | Mandatory? | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must detail chemical composition, corrosion resistance standards (e.g., ASTM B117), and base polymer type. |
| β Material Safety Data Sheet (MSDS/SDS) | βοΈ | Critical for chemical clearance. Must confirm hazardous material status. |
| β Commercial Invoice | βοΈ | Clearly state "Corrosion Resistant Adhesive" and specify the polymer base (Natural vs. Synthetic). |
| β Certificate of Origin (CO) | βοΈ | Required for tariff calculation and potential preferential treatments (if applicable). |
| β Packaging List | βοΈ | Detail net/gross weight and volume for duty calculation. |
β 2. Declaration Tips (Key Mnemonics)
π₯ "Know Your Base, Declare Precisely, Avoid Ambiguity!"
| Scenario | Correct Declaration | Incorrect Practice |
|---|---|---|
| Natural Polymer Base | Use 3913.90.10.00 | Declaring as "General Adhesive" β Misclassification risk |
| Synthetic Resin (Epoxy) | Use 3907.10.00.00 | Declaring as "Unlisted Resin" β Higher tax if specific code applies |
| Unlisted Synthetic Resin | Use 3911.90.91.x0 | Vague description "Glue" β Delays & Potential Audits |
| Mixed Composition | Disclose dominant component | Hiding synthetic content β Fraud penalties |
β 3. Special Handling Cases
| Case | Handling Advice |
|---|---|
| Hazardous Chemicals | If adhesive contains volatile organic compounds (VOCs), ensure EPA/OSHA compliance docs are ready. |
| Dual-Use Items | Some corrosion-resistant adhesives may be used in aerospace/military. Check EAR/ITAR restrictions. |
| Pre-Ruling Application | Strongly Recommended: Apply for an Advance Ruling with CBP to confirm the correct HS Code (3913 vs. 3911/3907) before shipment. |
π 5. Global Market Comparison (2026 Context)
| Country/Region | Recommended HS Code | Approx. Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3913.90.10.00 (Best) |
35.0% (Base 0% + 25% + 10%) | TSCA Compliance (EPA) | Lowest tax among options if natural-based. |
| πΊπΈ USA | 3907.10.00.00 |
41.5% (Base 6.5% + 25% + 10%) | TSCA Compliance (EPA) | High tax for epoxy/polyether types. |
| π¨π³ China | 3506.91.00.00 (Example) |
Varies (Usually Low/Zero) | CCC (if applicable) | Different classification system; check Chinese tariff schedule. |
| πͺπΊ EU | 3506.91.00 or 3910.00.00 |
0-6.5% | REACH Registration | EU has strict REACH compliance for adhesives. |
π Conclusion: - USA is the highest-cost market due to Section 301 and Section 122 tariffs. - Choosing
3913.90.10.00(if your product qualifies) can save 6.5% compared to3907or3911codes. - Chemical Compliance (REACH/TSCA) is as critical as tariff classification.
π 6. Common Errors & Pitfalls (Lessons Learned)
β Error 1: Misclassifying synthetic epoxy adhesives as 3913.90.10.00 (Natural Polymers)
π Consequence: Customs rejection, penalties, and retroactive payment of 41.5% instead of 35%.
β Error 2: Declaring only "Adhesive" without specifying polymer type
π Consequence: CBP may assign a default code with higher duties or require extensive additional testing.
β Error 3: Ignoring Section 122 Tariff in cost calculations
π Consequence: Underestimating landed cost by 10%, leading to margin erosion.
β Correct Practice:
"Corrosion-Resistant Adhesive, Epoxy-Based, Non-Hazardous, ASTM D4541 Compliant, Model XYZ, Made in China"
π― 7. Conclusion: Precision Classification Saves Money!
π― Remember the Golden Rule:
πΉ "Natural Base = 3913 (35% Total)"
πΉ "Synthetic Base = 3911/3907 (41.5% Total)"
πΉ "Declare Chemicals, Not Just 'Glue'"
π Pro Tip:
If your adhesive is epoxy-based (common for corrosion resistance), you cannot use 3913.90.10.00 unless it is a modified natural polymer blend. Stick to 3907.10.00.00 for epoxies.
For petroleum/polysulfide resins, use 3911.90.91.10.
π£ Immediate Action Required:
π Consult a Customs Broker: Provide the MSDS and Chemical Composition to verify if your product qualifies for the lower 3913.90.10.00 code.
π Apply for Advance Ruling: To lock in the correct HS Code and avoid post-entry audits.
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Every 6.5% in Base Duty is Profit Lost!
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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.