高强度砂浆
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824405000 | 40.0% | CN | US | Official Doc |
| 3824402000 | 35.0% | CN | US | Official Doc |
| 3214905000 | 38.25% | CN | US | Official Doc |
| 3214901000 | 35.0% | CN | US | Official Doc |
| 3824405000 | 40.0% | CN | US | Official Doc |
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AI Analysis
🧱 High-Strength Mortar Admixtures & Curing Agents
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Level Compliance Strategy
📌 I. Product Definition & Classification: Do You Truly Understand "High-Strength Mortar Additives"?
High-strength mortar is not a single product but a chemical system designed to enhance the performance of cement, mortar, or concrete. In international trade, these products are classified differently based on their specific function (additive vs. surface treatment) and form (powder/liquid).
Chemical Admixtures (Additives): Ingredients added into the mix (cement/mortar) to improve strength, workability, or setting time. Primarily classified under Chapter 38.
Surface Treatment/Curing Agents: Applied to the surface of hardened concrete or mortar to retain moisture or protect. Primarily classified under Chapter 32.
⚠️ Key Distinction:
- If the product is intended to be mixed into the mortar/concrete to change its physical properties →归入 3824 (Chemical Products).
- If the product is applied to the surface for curing or sealing →归入 3214 (Paints, Varnishes, and Related Products).
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Match)
Based on the provided data, here are the precise classifications for high-strength mortar related products:
| HS Code | Product Description | Application Scenario | Material Type | Tax Rate (Total) |
|---|---|---|---|---|
3824.40.50.00 |
High-Strength Mortar Additive; High-Performance Curing Agent (Mixed In) | Ready-made additives for cement, mortar, or concrete | Chemical Preparations | 40.0% |
3824.40.20.00 |
High-Strength Mortar Additive | Specific mortar additive application | Inferred Chemical Preparations | 35.0% |
3214.90.50.00 |
High-Performance Mortar Curing Agent | Surface treatment for concrete/mortar | Chemical Preparations | 38.25% |
3214.90.10.00 |
High-Performance Mortar Curing Agent | Surface treatment agent | Chemical Liquid/Resin | 35.0% |
🔍 Critical Reminder:
-3824Codes: For products that are ingredients in the mortar mix (e.g., plasticizers, accelerators, superplasticizers).
-3214Codes: For products that are finished surface treatments (e.g., sealing agents, curing compounds applied after pouring).
- Do not confuse "Additive" with "Agent": If the product is a "Curing Agent" applied to the surface, it likely falls under3214. If it is a "Mortar Additive" mixed inside, it falls under3824.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: Current Trade War Tariffs (Section 301 + IEEPA)
🎯 1. 3824.40.50.00 —— Chemical Preparations for Mortar/Concrete (Mixed In)
| Item | Content |
|---|---|
| Base Tariff | 5.0% (General Rate) |
| Section 301 Surtax | +25.0% (Trade War Tariff) |
| 122 Clause / IEEPA | +10.0% (Specific Chinese-origin surcharge) |
| Total Rate | 40.0% |
| Tax Calculation | CIF Value × 40% |
| De Minimis Exemption | ❌ Not Eligible (High risk of audit) |
| Legal Basis Path | USITC:3824.40.50.00 → FOOTNOTE:301 → IEEPA:122 |
📌 Explanation:
- This is the highest tax bracket for mortar additives.
- The 5% base is standard for general chemical preparations.
- The 35% additional (25% + 10%) makes this a high-cost entry item.
- Warning: Ensure the "Chemical Preparation" definition is strictly met to avoid being reclassified as a simpler material with different tax implications.
🎯 2. 3824.40.20.00 —— Specific Mortar Additives
| Item | Content |
|---|---|
| Base Tariff | 0.0% |
| Section 301 Surtax | +25.0% |
| 122 Clause / IEEPA | +10.0% |
| Total Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | USITC:3824.40.20.00 → FOOTNOTE:301 → IEEPA:122 |
📌 Note:
- This code has a 0% base rate, making it slightly more favorable than3824.40.50.00.
- It is typically used for specific mortar additives that do not fall under the broader "Chemical Preparations" umbrella.
- Crucial: The product description must strictly align with "Mortar Additive" to qualify for this specific sub-heading.
🎯 3. 3214.90.50.00 —— High-Performance Curing Agents (Surface Treatment)
| Item | Content |
|---|---|
| Base Tariff | 3.25% |
| Section 301 Surtax | +25.0% |
| 122 Clause / IEEPA | +10.0% |
| Total Rate | 38.25% |
| Tax Calculation | CIF Value × 38.25% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | USITC:3214.90.50.00 → FOOTNOTE:301 → IEEPA:122 |
📌 Explanation:
- This falls under Chapter 32 (Paints/Varnishes), which often has lower base rates but still suffers the full trade war surtaxes.
- Use this if the product is a liquid resin or coating applied to the surface.
🎯 4. 3214.90.10.00 —— Surface Treatment Agents (Chemical Liquid/Resin)
| Item | Content |
|---|---|
| Base Tariff | 0.0% |
| Section 301 Surtax | +25.0% |
| 122 Clause / IEEPA | +10.0% |
| Total Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | USITC:3214.90.10.00 → FOOTNOTE:301 → IEEPA:122 |
📌 Note:
- This is the lowest cost option for surface treatment products (Base 0%).
- Ideal for chemical liquids or resins used strictly for surface sealing or curing.
- Key: Must prove the product is a "Surface Treatment Agent" and not an internal mortar additive.
🛠️ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Guide)
✅ 1. Documentation Checklist (Non-Negotiable)
| Document | Required | Notes |
|---|---|---|
| ✅ Technical Data Sheet (TDS) | ✔️ | Must specify: Chemical composition, pH, density, intended use (Mix vs. Surface). |
| ✅ Safety Data Sheet (SDS) | ✔️ | Critical for chemical imports. Must match HS Code classification. |
| ✅ Product Photos | ✔️ | Show packaging label, warning symbols, and product state (powder/liquid). |
| ✅ Letter of Explanation | ✔️ | Explicitly state: "This is a chemical additive for mortar/concrete" OR "This is a surface curing agent." |
| ✅ Commercial Invoice | ✔️ | Clear description: "High-Strength Mortar Admixture" or "Concrete Curing Compound." |
| ✅ Certificate of Origin (CO) | ✔️ | To verify Chinese origin for surtax calculation. |
✅ 2. Declaration Strategy (Key Mantra)
🔥 "Function Defines Function, Form Defines Form, Additive is 3824, Curing is 3214!"
| Scenario | Correct Declaration | Incorrect Action | Consequence |
|---|---|---|---|
| Powder/Liquid added to mix | 3824.40.50.00 or 3824.40.20.00 |
Declare as "Paint" → 3214 |
Audit Risk:海关 will question why a "paint" is used in concrete. |
| Liquid sprayed on surface | 3214.90.50.00 or 3214.90.10.00 |
Declare as "Admixture" → 3824 |
Tax Overpayment: 3824 may be 40%, while 3214 can be 35%. |
| Resin-based Surface Sealer | 3214.90.10.00 |
Declare as "Cement" → 2523 |
Severe Penalty: Wrong chapter, high fine. |
| Generic "Construction Chemicals" | Vague Description | ❌ Avoid | Detention: Customs will hold goods for classification review. |
✅ 3. Special Handling Tips
| Situation | Recommendation |
|---|---|
| OEM/White Label Products | Provide the brand owner's technical specs. Do not use vague generic terms. |
| Mixed Shipments | If sending both additives (3824) and curing agents (3214), separate them on the invoice and in the container if possible to avoid confusion. |
| Liquid vs. Powder | Emphasize the state (e.g., "Liquid Resin Curing Agent") to support 3214 classification. |
| HS Code Pre-Ruling | Highly Recommended. Submit a Pre-Ruling Request to CBP with TDS/SDS to lock in the 35% vs 40% rate. |
🌍 V. Global Market Comparison (2026 Update)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Key Requirement |
|---|---|---|---|
| 🇺🇸 USA | 3824.40.50.00 / 3214.90.10.00 |
35% - 40% | IEEPA 122 + Section 301 apply. |
| 🇨🇳 China | 3824.40.50.00 / 3214.90.10.00 |
~5-13% | Import duty + VAT. No trade war surtax. |
| 🇪🇺 EU | 3824.40.50.00 / 3214.90.10.00 |
~6.5% | REACH Registration mandatory for chemicals. |
| 🇬🇧 UK | 3824.40.50.00 / 3214.90.10.00 |
~6.5% | Post-Brexit rules. REACH UK compliance. |
| 🇨🇦 Canada | 3824.40.50.00 / 3214.90.10.00 |
~5% | CEPA (Chemicals) compliance required. |
📌 Conclusion:
- USA is the most expensive due to 35-40% effective tariffs.
- EU/UK have lower tariffs but strict REACH compliance costs.
- China has no surtaxes but higher VAT.
📌 VI. Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Calling a "Surface Curing Agent" a "Mortar Additive"
👉 Result: Declared under 3824 (40%) instead of 3214 (35%). Overpaid 5% tariff.
❌ Error 2: Calling a "Powder Additive" a "Surface Treatment"
👉 Result: Declared under 3214 (35%) but goods rejected because "Surface Treatment" should be liquid/coating. Goods detained/returned.
❌ Error 3: Vague Description: "Chemical for Concrete"
👉 Result: Customs assigns worst-case scenario or delays clearance for 2-4 weeks. Demurrage costs skyrocket.
❌ Error 4: Ignoring IEEPA 122 Clause
👉 Result: Failing to declare the 10% surcharge leads to penalties and back-taxes upon audit.
✅ Correct Approach:
"High-Performance Concrete Curing Compound, Liquid, Water-Based, for Surface Treatment Only, Model XYZ, REACH Compliant"
HS Code:3214.90.10.00
🎯 VII. Conclusion: Precision Classification Saves Money!
🎯 Remember the Mantra:
🔹 "Mix it? -> 3824 (40% or 35%)
🔹 "Coat it? -> 3214 (38.25% or 35%)
🔹 "Be Specific! -> Vague = Delay/Fine!"📌 Pro Tip:
If you are exporting to the US, always request a CBP Pre-Ruling. The difference between3824.40.50.00(40%) and3214.90.10.00(35%) is 5%, which is significant for bulk chemical shipments.
📣 Immediate Action:
📞 Contact a Licensed Customs Broker
📄 Prepare TDS & SDS
🚀 Apply for Pre-Ruling
💰 Optimize Your Supply Chain Cost!
✨ Professional Customs Clearance Starts with Precise Classification!
💼 Your Margin Depends on the First Digit of the HS Code!
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) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — 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 — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — 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.