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             US HTS CODE | Harmonized Tariff Schedule HS code & Tariffs Search Service (2025 HTS Revision 26 (10/31/2025))
| HTS Code | 8547104000 | 8547108000 | 
| Article Description | Ceramic insulators to be used in the production of spark plugs for natural gas-fueled, stationary, internal combustion engines | Other | 
| Quota of Quantity | -- | -- | 
| Unit of Quantity | [No.] | [No.] | 
| Rates of Duty (1-General) | 3% | 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,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 
| Rates of Duty (2-Cuba and North Korea) | 60% | 60% | 
| 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) | -- | -- | 
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