Silicon Ingot Annealing Oven Heat Exchanger from Japan
Recuperative heat exchanger for annealing furnaces, recovering heat during silicon ingot stress relief post-crystal growth for wafer production. HTS 8419.90.30.00 for heat exchange parts in semiconductor material treatment equipment. Improves energy efficiency in high-temperature annealing cycles.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document annealing ramp rates (e.g
• 1°C/min); thermal shock resistance certification
• Pitfall: furnace exclusion confusion leading to 8514 classification