On April 20th - 22nd, 2019, Yangquan Shisheng Lianzhong Transportation Co., Ltd. and Xi'an Cummins leaders from all levels visited the Xiyang Sandu Mining Area, Xiyang Fenghui Coal Mine, Heshun Hongrun Coal Mine and Lingshi Xinyuan Coal Mine. Solve problems for customers, warm and cold. ......
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