2825.90.30.00/Monoclinic Tungsten Trioxide Crystals/Mexico

Monoclinic Tungsten Trioxide Crystals from Mexico

Synthetic monoclinic WO3 crystals grown for research and thin-film deposition in photochromic applications. HTS 2825.90.30.00 applies as cultured inorganic crystals of metal oxides, excluded from optical elements unless finished. Meets 'chemically defined' criteria.

Duty Rate — Mexico → United States

5.5%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Declare crystal structure and growth method; distinguish from optical elements (9001) by lack of finishing

• Provide XRD analysis confirming phase purity to avoid reclassification as mixtures

• Small quantities for R&D may qualify for duty relief under GSP or scientific imports

Monoclinic Tungsten Trioxide Crystals from Mexico — Import Duty Rate | HTS 2825.90.30.00