随机需求下考虑产品替代的跨国供应链网络均衡决策

In the cross-national supply chain network system, upstream and downstream enterprises inevitably face tariff policies in the transaction process. At the same time, the substitution of local products will also have an impact on the tariff implementation and the decision-making of all parties. Considering product substitutability, this paper constructs a profit maximization model of multinational supply chain members affected by tariff policy under random demand, and using the complementary system, the equilibrium decision of transnational supply chain network is obtained. The results show that: 1) As the country increases the tariffs on imported products, the profits of the enterprises producing and trading substitute products will increase; 2) When the demand fluctuation of a country’s imported products increases, the trading volume of the country’s local products will reduce, and both manufacturers’ profit and dealers’ expected profit will decrease; 3) If the manufacturer improves the substitution degree of its products for imported products, the trading volume of products will increase, which will also increase the profit of the manufacturer and the expected profit of dealers dealing with it, the implementation of national tariff policy will amplify the positive impact of local products on the improvement of the substitution degree of imported products.