MES（Manufacturing Execution System）: With the goal of JIT production and order "pull" manufacturing mode, MES is based on integrated job planning and scheduling, online quality control, workshop material flow planning and control, production pedigree traceability, visual process monitoring and production status analysis, to monitor and control all workshop manufacturing resources and other execution conditions, including products, materials, equipment, personnel, process instructions(online process guidance) and setup, in the assembly of auto parts, Provide a unified working platform for the monitoring, control and management of the manufacturing process in the workshop.