Beijing Coal Machinery Company fully implement MES system to build its digital intelligent factory. The system has the functions of production planning, production schedule reporting and data analysis, etc. It can supervise the production process and schedule in time through data collection and combining the information of materials, working hours, equipment and personnel in the production process. The system can realize the visualization of production data, data analysis and chart display, which is conducive to the processing of emergencies or quality anomalies in the workshop, assist the management of the company to query, statistical analysis of data, and provide a real and credible data basis for production and management decisions. (Beijing Coal Machinery Company)