[Retracted] Mobile Communication Procurement Platform Optimization Decision Based on Overseas Retailer Investment under Supply and Demand Disruption Risk

Table 1

Parameter description and explanation.

Parameter	Definition
	Unit purchase price provided by crossborder suppliers
	Unit purchase price provided by overseas suppliers
	Retail price of crossborder e-commerce products
	Random market demand of crossborder e-commerce products
	The deterministic part of stochastic market demand for cross border e-commerce products
	The uncertain part of the random market demand for crossborder e-commerce products, the mean is
	Increased demand due to supply disruption
	Probability of supply disruption for cross-border suppliers
	Unit shortage cost of overseas retailers
	Residual value of unsold products of overseas retailers
	The optimal purchase quantity of overseas retailers under the condition that crossborder suppliers are the only source of purchase without interruption
	The optimal purchasing quantity of overseas retailers with overseas suppliers as the sole purchasing source
	The purchase quantity of overseas retailers ordering from crossborder suppliers under dual-source procurement
	The purchase quantity of overseas retailers ordering from overseas suppliers under dual-source procurement
	After the retailer invests, the purchase quantity of overseas retailers ordering from crossborder suppliers under dual-source purchasing
	After the retailer invests, the purchase quantity of overseas retailers ordering from overseas suppliers under dual-source procurement
	Investment amount of overseas retailers in crossborder suppliers
	Probability of supply disruption for crossborder suppliers after investment
	Supply price of crossborder suppliers after investment
	Profits of overseas retailers