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9001.90.90.00/BK7 Glass Prism Blank/Japan

BK7 Glass Prism Blank from Japan

MgF2 optical window for excimer lasers and deep UV lithography at 193nm. HTS 9001.90.90.00 unmounted crystalline optical element with lowest refractive index. Essential for ArF laser systems.

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

• VUV transmission (>80% at 193nm) data essential

• Hygroscopic nature requires sealed packaging documentation

• Semiconductor fab end-use may trigger additional certifications

BK7 Glass Prism Blank from Japan — Import Duty Rate | HTS 9001.90.90.00