South Korea's exports lost 1.1 percent on-year in the first 20 days of September, data showed Monday.Outbound shipments reached US$35.58 billion in the Sept. 1-20 period, compared with $35.97 billion tallied a year earlier, according to the data from the Korea Customs Service.Imports shed 4.5 percent on-year to $34.8 billion during the period, resulting in a trade surplus of $800 million.In August, exports rose 11.4 percent on-year to $57.9 billion, the 11th consecutive monthly gain, on the back of strong demand for semiconductors, government data showed.Source: Yonhap News Agency