韩国12月PPI环比增长0.4%，同比增长1.9%

Group 1 - The core point of the article is that South Korea's Producer Price Index (PPI) showed a month-on-month increase of 0.4% in December, with the previous value revised to 0.3% [1] - Year-on-year, South Korea's PPI increased by 1.9% in December, with the prior value also revised to 1.9% [1]