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Changsha Yitian Import&Export Trading Co.,Ltd,which is approved by the state, with the import and export rights company. We are specializes in manufacturing and supplying Mineral exploration,SPT, geological prospecting, and water well construction, Oil drilling rig ,as well as DTH drilling rig, RC rig, cable tool rig, anchorage rig, trench less rig and drilling tools for different kinds of rigs, etc.
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