Tbm_High-Efficiency Rock Tunnel Boring Machine Jzs6050 Shandong Zhangqiu Blower Co., Ltd. Base Info Model NO.:JZS6050After-sales Service:Guide InstallationWarranty:2 YearsTrademark:JISTRONGTransport Package:SeaworthySpecification:diam6.0mOrigin:China Description Pre:Original Caterpillar Grader Cat 140K Motor Grader Next:Tunnel Boring Micro Tunneling Machine Jze6980e