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. Malaysian merchants expressed their satisfaction and signed a water well drilling rig ordering contract on the spot. Both parties formally reached long-term strategic cooperation and signed a memora

Gas and water Malfunction failures of air leg rock drill are mainly due to: high water pressure, gas and water blocked, water valve spring failure, leakage, leakage, apron failure, parts of the valve

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

The Association of Taiwan Investment Enterprises on the Mainland leaders, totally 24 persons came to Shandong China Coal Group e-commerce industrial park for investigation, China Coal Group Executiv

Shandong China Coal Group and Shandong Mingde Gangcheng Machinery Co., Ltd. Held Strategic Cooperation Signing Ceremony in China Coal Group e-commerce Industrial Park

Shandong China Coal Group Chairman and General Manager Qu Qing attended 13th Standing Committee Meeting of Jining City Federation of Industry and Commerce