Shuangyashan Mining Company has eight production mines, four of which use Shenzhou Group dry coal preparation technology. Shuangyang mine, Dongrong No. 3 mine and Dongbao mine adopt full size dry coal preparation system, and Dongrong No. 1 Mine adopts ZM mineral High-efficiency separation system, with a total beneficiation capacity of 5.5mt/a. All the dry concentrators are invested, constructed and operated by Shenzhou group. The flexible cooperation mode and exquisite service have made outstanding contributions to the improvement of coal quality and efficiency of Shuangyashan Mining Company. The application of advanced dry separation technologies such as IDS intelligent dry separation and ZM mineral separation has opened up a new way for the separation of power coal in Longmei group.