HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
---|---|---|---|---|---|
3913905000 | Doc | 61.5% | CN | US | 2025-05-12 |
3812392000 | Doc | 61.5% | CN | US | 2025-05-12 |
3812397000 | Doc | 55.0% | CN | US | 2025-05-12 |
3815905000 | Doc | 60.0% | CN | US | 2025-05-12 |
3913905000 | Doc | 61.5% | CN | US | 2025-05-12 |




Here is the structured classification and tariff information for "Natural Polymer Antioxidants" based on the provided HS codes and tax details:
🔍 HS CODE: 3913905000
Description:
- Natural polymers or modified natural polymers, other specific items
- Also listed as: "Unspecified primary form products not included elsewhere"
Tariff Breakdown:
- Base Tariff Rate: 6.5%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 61.5%
Notes:
- This code may apply to natural polymer antioxidants if they are classified as modified or unspecified primary forms.
- Proactive Advice: Confirm the exact chemical structure and form of the product to ensure correct classification.
🔍 HS CODE: 3812392000
Description:
- Antioxidants and other composite stabilizers for rubber or plastics
Tariff Breakdown:
- Base Tariff Rate: 6.5%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 61.5%
Notes:
- This is a likely candidate for natural polymer antioxidants used in rubber or plastic stabilization.
- Proactive Advice: Verify if the product is used in rubber or plastic applications and confirm the chemical composition.
🔍 HS CODE: 3812397000
Description:
- Antioxidants and other composite stabilizers for rubber or plastics: Other: Other
Tariff Breakdown:
- Base Tariff Rate: 0.0%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 55.0%
Notes:
- This code may apply to natural polymer antioxidants that are not explicitly covered under 3812392000.
- Proactive Advice: Confirm if the product is not covered under the more specific 3812392000 code.
🔍 HS CODE: 3815905000
Description:
- Initiators, promoters or catalysts for reactions
Tariff Breakdown:
- Base Tariff Rate: 5.0%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 60.0%
Notes:
- This code is for reaction initiators or catalysts, not directly related to antioxidants.
- Proactive Advice: Ensure the product is not classified as a catalyst or initiator, which would fall under this code.
📌 Important Reminders:
- April 11, 2025 Special Tariff: A 30% additional tariff will be applied to all listed codes after this date.
- Anti-dumping duties: Not specified in the data, but may apply depending on the origin of the product.
- Certifications: Check if any certifications (e.g., REACH, RoHS, or customs documentation) are required for import.
- Material Verification: Confirm the exact chemical name, form, and intended use of the product to ensure correct HS code classification.
If you provide more details about the chemical name, form, and intended use of the product, I can help you further narrow down the most accurate HS code and tax rate. Here is the structured classification and tariff information for "Natural Polymer Antioxidants" based on the provided HS codes and tax details:
🔍 HS CODE: 3913905000
Description:
- Natural polymers or modified natural polymers, other specific items
- Also listed as: "Unspecified primary form products not included elsewhere"
Tariff Breakdown:
- Base Tariff Rate: 6.5%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 61.5%
Notes:
- This code may apply to natural polymer antioxidants if they are classified as modified or unspecified primary forms.
- Proactive Advice: Confirm the exact chemical structure and form of the product to ensure correct classification.
🔍 HS CODE: 3812392000
Description:
- Antioxidants and other composite stabilizers for rubber or plastics
Tariff Breakdown:
- Base Tariff Rate: 6.5%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 61.5%
Notes:
- This is a likely candidate for natural polymer antioxidants used in rubber or plastic stabilization.
- Proactive Advice: Verify if the product is used in rubber or plastic applications and confirm the chemical composition.
🔍 HS CODE: 3812397000
Description:
- Antioxidants and other composite stabilizers for rubber or plastics: Other: Other
Tariff Breakdown:
- Base Tariff Rate: 0.0%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 55.0%
Notes:
- This code may apply to natural polymer antioxidants that are not explicitly covered under 3812392000.
- Proactive Advice: Confirm if the product is not covered under the more specific 3812392000 code.
🔍 HS CODE: 3815905000
Description:
- Initiators, promoters or catalysts for reactions
Tariff Breakdown:
- Base Tariff Rate: 5.0%
- Additional Tariff: 25.0%
- Special Tariff after April 11, 2025: 30.0%
- Total Tax Rate: 60.0%
Notes:
- This code is for reaction initiators or catalysts, not directly related to antioxidants.
- Proactive Advice: Ensure the product is not classified as a catalyst or initiator, which would fall under this code.
📌 Important Reminders:
- April 11, 2025 Special Tariff: A 30% additional tariff will be applied to all listed codes after this date.
- Anti-dumping duties: Not specified in the data, but may apply depending on the origin of the product.
- Certifications: Check if any certifications (e.g., REACH, RoHS, or customs documentation) are required for import.
- Material Verification: Confirm the exact chemical name, form, and intended use of the product to ensure correct HS code classification.
If you provide more details about the chemical name, form, and intended use of the product, I can help you further narrow down the most accurate HS code and tax rate.
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