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US HTS CODE | Harmonized Tariff Schedule HS code & Tariffs Search Service (2025 HTS Revision 26 (10/31/2025))
| HTS Code | 2931907000 | 2930904920 |
| Article Description | N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts | Mercaptocarboxylic acids |
| Quota of Quantity | -- | -- |
| Unit of Quantity | [kg] | [kg] |
| Rates of Duty (1-General) | Free | 4.2% |
| Rates of Duty (1-Special) | -- | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) |
| Rates of Duty (2-Cuba and North Korea) | 25% | 25% |
| Footnotes | [{columns=[general], value=See 9903.88.03. , type=endnote}] | [{columns=[general], value=See 9903.88.03. , type=endnote}] |
| Additional Duty | -- | -- |
| Additional Duty(products of China) | -- | -- |