Semiconductor Wafer Fab Check Valve Poppet from Japan
Ceramic poppet for high-purity check valves preventing backflow in gas lines of semiconductor wafer processing equipment. Precision-ground for ultra-clean environments, classified under general valve parts HTS 8481.90.90 unless proven as machinery-specific.
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 end-use statements linking to specific wafer fab tools to argue for machinery classification
• Cleanroom certification (ISO 14644) and particle count specs strengthen parts-of-machines claims
• Avoid general 'ceramic valve part' descriptions; specify semiconductor process compatibility