CC5C has participated in the construction of more than 20 large coal bases and completed more than 400 various types of mining projects.Vertical shaft project: 16 deep shafts with a depth of over 1000 meters, of which the main shaft of the Laizhou Shaling Gold Mine is 1600.2 meters deep, which is the deepest shaft in China. The auxiliary shaft of Hebei Cixi Coal Mine is 1341.6 meters deep, which is the deepest shaft in Asia. The coal mine diameters of Nalin River, Hongqing River and Baijia Haizi are all 10.5 meters, which is the largest inChina. In the construction of the Tengdong Shengjian coal mine shaft in Shandong Province, the company achieved a success of over 100 meters in 8 consecutive months. In the construction of the main shaft of Wanfu Coal Mine, created a world record for one-time pass through a deep topsoil of 754.96 meters of the shaft. The two projects won the“The Guinness World Record”. In the construction of the frozen topsoil of the auxiliary shaft of the Shunhe Coal Mine of Yongcheng Coal & Electricity Group, included the 14th batch of Chinese enterprises new record with a monthly development of 244 meters. Drift and Incline Project: The Xiegou Coal Mine in Shanxi  Province has achieved a good development performance of 1576 meters in the coal roadway. In the construction of the large section rock drift in Sihe Mine, it has set a national record of over 200 meters for 7 consecutive months and 309.5 meters for the highest monthly development. The project has awarded the “Sun Cup”, “China Construction Engineering Luban Prize”and “National Quality Engineering Silver Award”, “The 60th Anniversary of the Founding of the People's Republic ofChina- 100 Classics and Quality Projects”.