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Tunnel Boring Electric Detonator from Canada

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 — Canada → United States

10.2%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Vibration monitoring data required; FIFO inventory for shelf life; train on tunnel ventilation protocols