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2844.30.50.50/Thorium Silicate Mixture/China

Thorium Silicate Mixture from China

Mixture of thorium compounds with silicates for ceramic applications. Classified as 'mixtures containing thorium compounds' under HTS 2844.30.5050. Specific activity determines heading.

Duty Rate — China → United States

5%

Rate breakdown

9903.05.860%Universal product exemption (U.S. note 52(b))
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Import Tips

• Silica/thoria ratio documentation; alpha spectroscopy; Rule 3(a) principal function analysis