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8451.90.90/InP Crystal Grinder Chuck/Japan

InP Crystal Grinder Chuck from Japan

Vacuum or magnetic chuck for securing Indium Phosphide crystal boules during precision diameter grinding. Part of crystal grinder equipment HTS 8451.90.90 statistical note (a)(ii)(A). Accommodates fragile III-V compound crystals prone to cracking.

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%
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Import Tips

• Specify vacuum port configuration, crystal diameter range, and rotation speed rating

• Include InP thermal expansion matching material certification