Abstract:

In the context of globalization， as “non-core business outsourcing” and “lean production” have become industry trends， while the supply chain has obtained lower operating costs， it is also more likely to be affected by sudden events and encounter supply disruption. Once the supply disruption occurs， enterprises in the supply chain will suffer huge losses， and if the appropriate procurement strategy is adopted in advance， it will effectively reduce the losses caused by the disruption. At the same time， consumers have different preferences for components from different sources and their assembled products， which will further affect the selection of procurement strategies for enterprises. Based on this， it focuses on a secondary supply chain system consisting of a high-quality supplier， a general supplier， and a manufacturer. Considering that both suppliers have disruption risks and consumers have different preferences for core components from different sources and their assembled products， game models for single source procurement and multiple source procurement are constructed. Based on solving the optimal equilibrium solution， comparative analysis and parameter sensitivity analysis are conducted.The results of the study show that compared to single source procurement， dual source procurement reduces the procurement costs of two core components and the sales prices of their products， but the procurement volume of the high-quality core component is reduced when the probability of disruption for the general supplier is higher， and the procurement volume of the general core component is reduced when the value perception factor is higher， or the value perception factor and the probability of disruption for the general supplier are both lower； Dual source procurement is always the best choice for the manufacturer， but the high-quality supplier tends to accept single source procurement when its own disruption probability is lower， and the general supplier tends to accept single source procurement when the value perception factor is higher， or the value perception factor and its own disruption probability are both lower； In the dual source procurement strategy， the manufacturer will always set a higher sales price for the high-quality core component product， but when the value perception factor is lower and the probability of disruption for the high-quality supplier is higher， the wholesale price of the high-quality core component is lower than that of the general core component， and the procurement volume of the high-quality core component is also higher； The increase in both the value perception factor and the probability of disruption will lead to an increase in the wholesale prices of both types of core components and the sales prices of their products； if both suppliers are able to supply normally， as the probability of disruption for one supplier increases， the manufacturer will increase the procurement volume of its core component and reduce the procurement volume of the core component from the other supplier； When the disruption probability of one supplier is less than a certain threshold， the manufacturer will reduce the procurement volume of the core component from the other supplier as the value perception factor increases.

Key words: sudden events, supply disruption, consumer preference, procurement strategy