Tunnel Boring Electric Detonator from Mexico
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 — Mexico → United States
10.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Vibration monitoring data required; FIFO inventory for shelf life; train on tunnel ventilation protocols