</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Float Zone Crystal Grower for Silicon Boules from Japan

A float zone machine produces ultra-pure monocrystalline silicon boules via zone melting, ancillary to printing processes in semiconductor fabrication using heading 8442 photolithography equipment. It prepares crystal material for wafer slicing used in circuit printing. Falls under 8443.91.10.00 for printing ancillary machines.

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

Include process flow diagrams showing integration with printing machinery to substantiate ancillary classification

Label with exact zone melting parameters; mismatches cause reclassification risks