SEOUL, Jan 1 (Reuters) – South Korea’s exports expanded at their fastest pace in 26 months in December, on robust chip demand and improved global demand, providing additional signals that the recovery is on track despite resurgences in the novel coronavirus. Exports in the final month of 2020 grew 12.6% year-on-year, the sharpest growth since October 2018 when it grew 22.5%, government data showed on Friday.