Recently, the product--No Pressure Air Door, which developed independently by China Coal Group passed the audit of the State Intellectual Property Office and obtained the Certificate of Utility Model
On the morning of February 14th, leaders visited Shandong China Coal Group for inspection.
Recently, the product--sliding stop buffer( product details please refer to https://www.chinacoalintl.com/pd-1447), which developed independently by China Coal Group passed the audit of the State Inte
Recently, the product--sliding stop buffer, which developed independently by China Coal Group passed the audit of the State Intellectual Property Office and obtained the Certificate of Utility Model P
Lantern Festival falls on Feb. 11th this year. In order to express the most sincere greetings and best wishes to every employee and their family, Group leaders on behalf of Shandong China Coal Group d
Jining City Science and Technology Bureau officially announced the
