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Semiconductor Lapping Machine Temperature Control Units from Japan

Integrated chiller/heater modules for wafer lapping equipment that maintain slurry temperature within 0.1°C tolerances during semiconductor wafer surface preparation. Directly referenced in statistical note (a)(ii)(C) as wafer grinders/lappers/polishers. Classifies as 8419.90.95 parts for temperature treatment.

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 temperature uniformity specs (ASTM standards) proving semiconductor precision requirements

Reference end-use in 200mm/300mm wafer fabs to qualify for manufacturing duty programs

Avoid reclassification by documenting integration with lapping plate chillers