Tunnel Boring Electric Detonator from Japan
Short-period delay electric detonators for tunnel boring machine-assisted blasting in infrastructure projects. Classified HTS 3603.60.00.00 as electric detonators for precise underground excavation. Reduces overbreak and vibration.
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
• Vibration monitoring data required; FIFO inventory for shelf life; train on tunnel ventilation protocols