XJ450 WORKOVER RIG/XJ550 WORKOVER RIG /XJ650 WORKOVER RIG/XJ750 WORKOVER RIG
XJ450/550/650/750 WORKOVER RIG
ZJ20/30/40/50/70 Oil Drilling Rig (drilling depth from 1000 meter to 7000 meter)
OIL DRILLING RIG is used for oil and gas exploration and...