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Mining Drilling Jumbo Robust Hydraulic Face Drilling Jumbo for Tunnel Excavation. Optimized for Small Tunnels: Designed for tunnels up to 6m high and 6.1m wide. Dual Damping Rock Drills: ZDG rock drills with dual damping for extended steel longevity. Advanced D14 Control System: PLC control with 7-inch monitor, automatic tramming, and data management. Safety Focused Design: Includes FOPS approved roof protection and remote-control service. One Year Warranty: Comprehensive warranty coverage for one year. CE and ISO Certified: Meets CE and ISO 9001:2008 safety and quality standards.