... 6,560' (2000m), 9,840' (3000m) and 13,123'(4000m) which is the largest truck-mounted drilling rig, and static hook ... , good cross-country capability, easy mobilization and low cost, which are suitable for the drilling operation of medium depth and shallow ... Electric, air, and hydraulic system is centrally controlled. Key components are world famous make. The mast design and manufacturing comply with ...