Four main sources of black swan events in supply chain management

Environmental uncertainty, supplier uncertainty, demand uncertainty and logistics distribution uncertainty.

1. Environmental uncertainty: natural disasters such as earthquakes and floods cause the supply chain to be interrupted and cannot operate normally.

2. Uncertainty of suppliers: such as bankruptcy of suppliers, supply interruption, etc. , resulting in the supply chain can not operate normally.

3. Uncertainty of demand: such as changes in customer demand and market fluctuation, which leads to imbalance of supply chain production and marketing and waste of resources.

4. Uncertainty of logistics distribution: such as transportation delay and change of delivery time, the supply chain cannot accurately predict and manage inventory.