Mr. Shao, chief engineer of Gansu Yaojie Coal Electrical Group is inspecting drilling rig in workshop of CCTEG Xi’an Research Institute. Shao highly praised the achievements of CCTEG Xi'an Research Institute in the field of coal geological exploration and coal mine safety. He mentioned that the underground drilling rigs have helped improving Yaojie Coal Electrical Group’s mining safety sharply. He expected deeper cooperation in coal mining geology guarantee between the two sides.