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In order to better provide human resources services for enterprises and institutions and solve labor needs, China Coal Group invested in the establishment of Shandong Zhongwu Human Resources Service C

This certificate is issued by the Safety Mark National Mining Product Safety Marking Center, marking the quality of the electromagnetic starter series produced by our group. And safety has been approv

In order to further expand the business area of the group, China Coal Group recently invested and established Shandong Zhonghui Enterprise Management Consulting Co., Ltd. with a registered capital of

China Coal Group For Obtaining The Explosion-proof Certificate And Mining Product Safety Mark Inspection Report

1.The shaft bears the full load of the negative machine, so good lubrication has a great relationship with the life of the bearing. It directly affects the service life and operation rate of the machi

1. Lubricant: Lubrication has a great influence on the performance and service life of the machine. Oil-free operation is strictly prohibited, and it is best not to use grease for lubrication to avoid