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2012

(Summary description)The German expert Maier assisted in the development of a new type of intelligent electric control drilling rig XY-44B, and achieved a complete success.

2012

(Summary description)The German expert Maier assisted in the development of a new type of intelligent electric control drilling rig XY-44B, and achieved a complete success.

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The German expert Maier assisted in the development of a new type of intelligent electric control drilling rig XY-44B, and achieved a complete success.

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