In edge layer, CNC machine tools, smart robots, sensors, terminals, and edge connection devices, not only produce data, but also have the capacities of data analysis and procVS is a collection of various multiple-dimensional models, which are the faithful mapping of PS. Ss provide system support and services for DTS. Data from PS, VS and SS are integrated and fused in SDTD. Through the ultra-high- fidelity mapping and real-time interaction among PS, VS, Ss and SDTD, the production elements management, pro- duction planning, production process control in DTS are optimized.