Rock drill is a kind of economic, simple, portable tunneling machinery tool, plays an important role in the work of stone mining, belongs to the impact equipment, its normal work needs water, oil, gas
On October 30th, the 18th China International Coal Mining Technology Exchange and Equipment Exhibition hosted by China Coal Industry Association was held at the China International Exhibition Center i
© Shandong China Coal Group. © 2016
Address:No. 11, North of Kaiyuan Road, High-tech Zone, Jining City, Shandong Province, China
Executive Editor: Linda Zhang