| dc.description.abstract | In light of the global pandemic, the shortage of wafers, US sanctions against China, and delays in sea and air transportation, the global shortage of ICs has become increasingly severe. Even if customers place orders according to the lead time (LT), manufacturers may be unable to meet the delivery deadline due to a lack of production capacity, shortage of wafers, or other unforeseen circumstances. Some manufacturers have even refused to accept orders, and the LT may be delayed by multiple weeks. Under such conditions of unstable material supply, inventory management has become ineffective, and the problem of long and short materials has become more serious. Therefore, we need different strategies to cope with this dilemma.
The existing transportation methods have also been affected by the pandemic. The shortage of workers has caused congestion at US ports, making it difficult to alleviate the situation. Container turnover has been affected, affecting Asian shipping. Sea freight prices have doubled, there is a shortage of containers, shipping schedules have been tightened, and inland trains and trucks in the US have refused to provide services due to labor and equipment shortages. All these factors have forced customers to request manufacturers to arrange shipment in advance, and the problem of long and short materials must be solved. | en_US |