Gas-Charged Piston Accumulator for Wafer Polishers from Japan
Specifically designed gas-charged piston accumulators for maintaining consistent pressure in semiconductor wafer lappers and polishers during surface flattening. Classified in HTS 8479.89.95.65 under hydraulic accumulators for wafer preparation equipment. Critical for achieving dimensional tolerances in semiconductor fabrication.
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 cleanroom compatibility certs (ISO 14644) for fab imports
• Detail gas type (N2 typical) in commercial invoice
• Watch for reclassification if shipped pre-charged with hazardous gases