Abstract：In order to accurately improve the resilience of China's electronic components industry chain, on the basis of constructing the oriented weighted network of China's electronic components industry chain using the national input-output table, the key nodes are identified and the resilience of the network is measured by considering the network connectivity contribution degree of nodes with cascading failures and the external dependence degree of nodes. The results show that for China's electronic components industry chain network, integrated circuits, sensitive components and sensors, electronic and electrical machinery special equipment, resistance capacitors and inductors, semiconductor discrete devices, electronic special materials, special glass are the key nodes with high network connectivity contribution and high external dependence.
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