The essence is to use digital information as the carrier to build a complete closed-loop of data collection, transmission, storage and feedback to break through the barriers of data circulation in each link of business process, and establish a new digital economic system. The extensive use of digital technology has greatly improved the extensive connection and intercommunication of internal and external information of enterprises. The information transmission and factor flow processes of product production and exchange in the manufacturing industry chain are effectively connected, and the operation efficiency of the industrial chain is greatly improved.