Thorium Lantern Mantle Residue from Japan
Waste residues from manufacturing gas lantern mantles impregnated with thorium nitrate, retaining thorium-232 daughters. Fits 2844.44.00.00 per radioactive residues 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
• Often exempt under low activity but declare fully; historical import records aid classification; incineration residues may shift categories