Korea's exports more than doubled from a year earlier during the first 10 days of October, customs data showed Monday. Outbound shipments reached $26.1 billion in the Oct. 1-10 period, according to the data from the Korea Customs Service. Imports went up 65.5 percent year-on-year to $22.3 billion over the cited period, resulting in a trade surplus of $3.8 billion.