HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
---|---|---|---|---|---|
3913100000 | Doc | 41.7% | CN | US | 2025-05-12 |
3913902090 | Doc | 60.8% | CN | US | 2025-05-12 |
3913905000 | Doc | 61.5% | CN | US | 2025-05-12 |
3913902090 | Doc | 60.8% | CN | US | 2025-05-12 |
3913100000 | Doc | 41.7% | CN | US | 2025-05-12 |




Product Name: Industrial Grade Alginic Acid
Classification: Natural Polymers and Their Derivatives (HS Code: 3913100000 or 3913902090)
✅ HS CODE Classification Overview
- HS CODE 3913100000
- Description: Alginic acid, its salts and esters (natural polymer derivatives in primary form)
-
Total Tax Rate: 41.7%
- Base Tariff: 4.2%
- Additional Tariff: 7.5%
- Special Tariff after April 11, 2025: 30.0%
-
HS CODE 3913902090
- Description: Other polysaccharides and their derivatives in primary form (includes natural polymers not specifically listed elsewhere)
- Total Tax Rate: 60.8%
- Base Tariff: 5.8%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
📌 Key Tax Rate Changes and Alerts
- April 11, 2025 Special Tariff:
- A 30.0% additional tariff will be imposed on both HS codes after April 11, 2025.
-
This is a time-sensitive policy and must be accounted for in cost estimation and customs planning.
-
Anti-dumping duties:
- Not applicable for this product category (no specific anti-dumping duties on alginic acid or its derivatives as of now).
📌 Proactive Advice for Importers
- Verify Material Specifications:
- Confirm whether the product is alginic acid (HS 3913100000) or another polysaccharide derivative (HS 3913902090).
-
Check if it is in primary form (unprocessed or minimally processed).
-
Check Unit Price and Certification:
- Ensure the unit price is correctly declared for accurate tax calculation.
-
Confirm if certifications (e.g., food-grade, industrial-grade, or specific quality standards) are required for import clearance.
-
Plan for Tariff Increases:
-
If importing after April 11, 2025, budget for the 30.0% additional tariff to avoid unexpected costs.
-
Consult Customs Broker:
- For complex classifications or if the product is borderline between HS codes, seek professional customs brokerage assistance.
📊 Summary Table
HS Code | Description | Base Tariff | Additional Tariff | April 11, 2025 Tariff | Total Tax Rate |
---|---|---|---|---|---|
3913100000 | Alginic acid, salts, esters | 4.2% | 7.5% | 30.0% | 41.7% |
3913902090 | Other polysaccharides in primary form | 5.8% | 25.0% | 30.0% | 60.8% |
Let me know if you need help with certification requirements, customs documentation, or tariff calculation tools.
Product Name: Industrial Grade Alginic Acid
Classification: Natural Polymers and Their Derivatives (HS Code: 3913100000 or 3913902090)
✅ HS CODE Classification Overview
- HS CODE 3913100000
- Description: Alginic acid, its salts and esters (natural polymer derivatives in primary form)
-
Total Tax Rate: 41.7%
- Base Tariff: 4.2%
- Additional Tariff: 7.5%
- Special Tariff after April 11, 2025: 30.0%
-
HS CODE 3913902090
- Description: Other polysaccharides and their derivatives in primary form (includes natural polymers not specifically listed elsewhere)
- Total Tax Rate: 60.8%
- Base Tariff: 5.8%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
📌 Key Tax Rate Changes and Alerts
- April 11, 2025 Special Tariff:
- A 30.0% additional tariff will be imposed on both HS codes after April 11, 2025.
-
This is a time-sensitive policy and must be accounted for in cost estimation and customs planning.
-
Anti-dumping duties:
- Not applicable for this product category (no specific anti-dumping duties on alginic acid or its derivatives as of now).
📌 Proactive Advice for Importers
- Verify Material Specifications:
- Confirm whether the product is alginic acid (HS 3913100000) or another polysaccharide derivative (HS 3913902090).
-
Check if it is in primary form (unprocessed or minimally processed).
-
Check Unit Price and Certification:
- Ensure the unit price is correctly declared for accurate tax calculation.
-
Confirm if certifications (e.g., food-grade, industrial-grade, or specific quality standards) are required for import clearance.
-
Plan for Tariff Increases:
-
If importing after April 11, 2025, budget for the 30.0% additional tariff to avoid unexpected costs.
-
Consult Customs Broker:
- For complex classifications or if the product is borderline between HS codes, seek professional customs brokerage assistance.
📊 Summary Table
HS Code | Description | Base Tariff | Additional Tariff | April 11, 2025 Tariff | Total Tax Rate |
---|---|---|---|---|---|
3913100000 | Alginic acid, salts, esters | 4.2% | 7.5% | 30.0% | 41.7% |
3913902090 | Other polysaccharides in primary form | 5.8% | 25.0% | 30.0% | 60.8% |
Let me know if you need help with certification requirements, customs documentation, or tariff calculation tools.
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