OIL DRILLING RIG,ZJ70DBS OEM of NOV corporation for 4years core component is imported from America Our brand is tiger We ... ×3Drive modeelectric driveelectric driveElectric control modeAC-DC-ACone to onedrilling rig,oil drilling rig,drill rig,rig,driling machine,oil rig,OIL DRILLING RIG OIL DRILLING RIG,china factory price