Qhia KJ421 Hydraulic Tunnel Boring Rig - qhov kev daws teeb meem zoo tshaj plaws rau tag nrho koj qhov kev xav tau tho txawv. Lub tshuab drilling loj no tshwj xeeb tsim los ua kom tau raws li qhov sib txawv ntawm qhov ntau thiab tsawg, nrog rau qhov sib txawv ntawm 16-68 square meters. Drilling rig muaj lub peev xwm zoo drilling, tuaj yeem laum qhov blast qhov thiab bolts nyob rau hauv ntsug, inclined thiab kab rov tav txoj hauj lwm, thiab yog ib qho khoom siv tseem ceeb rau kev tsim kho qhov.