South Korea’s exports during the first 10 days of March jumped 25.2% from a year earlier, preliminary data released by the customs agency showed on Thursday. The breakdown of data showed overseas sales of semiconductors, the nation’s top export item, soared 25.2% during the period, while shipments to China and the United States soared 33.9% and 21.9%, respectively. Exports in the comparable period of February jumped 69.0% on-year.