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US HTS CODE | Harmonized Tariff Schedule HS code & Tariffs Search Service (2025 HTS Revision 21 (08/29/2025))
| HTS Code | 2836993000 | 2804691000 |
| Article Description | Commercial ammonium carbonate and other ammonium carbonates | Containing by weight less than 99.99 percent but not less than 99 percent of silicon |
| Quota of Quantity | -- | -- |
| Unit of Quantity | [kg] | [kg, Si kg] |
| Rates of Duty (1-General) | 1.7% | 5.3% |
| Rates of Duty (1-Special) | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) |
| Rates of Duty (2-Cuba and North Korea) | 16% | 21% |
| Footnotes | [{columns=[general], value=See 9903.88.03., type=endnote}] | [] |
| Additional Duty | -- | -- |
| Additional Duty(products of China) | -- | -- |