Drill

The reason for the formation of air leg rock drill water needle fault: The center hole of the shank is not correct, the gap between the shank and the shank is too large, the water needle is too long,

Malaysian Businessmen visited Shandong China Coal Group for long-term strategic cooperation on borehole drilling rig

Russian merchants visited Shandong China Coal Group and carried out investigation for water well drilling rig purchasing and long term cooperation. Shandong China Coal Group Cross-Border E-commerce Co

Bangladesh merchants visited Shandong China Coal Group and carried out investigation for the relevant matters of purchasing Borehole Water Well Drilling Rig

Bangladesh merchants visited Shandong China Coal Group for Air Leg Rock Drill ​purchasement and relevant matters

Accompanied by Deputy General Manager of China Coal Group Cross-border E-commerce Company Tian Cong, Cameroon merchants visited Shandong China Coal Group Joint Manufacturing Company for inspection and