Korea's exports jumped 53.9 percent from a year earlier in the first 10 days of July, data showed Monday, on the back of strong outbound shipments of semiconductor products. Outbound shipments reached $29.8 billion in the July 1-10 period, compared with $19.3 billion tallied in the same period last year, according to the data from the Korea Customs Service. It marked the highest figure for any 10-day period compiled by the customs agency. The previous record was $28.6 billion, posted in June. Imports went up 17.4 percent on-year to $23.5 billion over the cited period, resulting in a trade surplus of $6.4 billion, the latest findings showed. By sector, exports of semiconductors nearly tripled to $11.2 billion, while those of automobiles rose 5.7 percent to $1.89 billion. Outbound shipments of petroleum products and ships advanced 22.7 percent and 75.1 percent, respectively, to $1.75 billion and $1.54 billion. By destination, exports to China surged 88.7 percent to $7 billion, while those to the United States rose 43.2 percent to $4.91 billion. As of Friday, cumulative exports this year total