Nanofabrication Sulfonium Chloride Solution from Japan
High-purity aqueous solution of the named sulfonium chlorides for extreme ultraviolet (EUV) lithography in nanofabrication. Classified in HTS 3824.99.2500 due to matching the subheading's specific chemical mixture definition.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Use NRTL-certified lab testing to confirm composition meets exact subheading requirements
• Include end-user statements proving semiconductor manufacturing use to avoid broader chemical classifications
• Watch for reclassification if concentration falls below 5% aromatic threshold