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Phlogopite Mica Splittings for Insulation from Japan

Split phlogopite mica in book-pack form, ideal for high-temperature electrical insulation precursors. Meets mica splittings definition under statistical note (b) for book-pack laminae used in agglomerated mica (6815). HTS 2525.10.00.20 covers these unworked splittings.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Provide mineral composition certificates confirming phlogopite vs. muscovite to support valuation

Ensure packaging prevents breakage—damaged splittings may classify as mica waste (2525.20)

Avoid mixing with powders; pure splittings prevent misclassification as worked products