Group 1 - In December, China's import of aluminum ore and its concentrates was 14.67 million tons, a year-on-year decrease of 1.7%. The cumulative import for the year reached 200.53 million tons, an increase of 26.4% compared to the previous year [1][3]. - The export volume of alumina in December was 210,000 tons, reflecting a year-on-year increase of 9.3%. The total export volume for the year was 2.55 million tons, which is a 42.7% increase year-on-year [2][3]. Group 2 - The total import of metal ores and sands in December was 14.71 million tons, with a total value of 191.98 billion RMB. The cumulative import for the year was 160.87 million tons, valued at 194.72 billion RMB, showing a year-on-year increase of 5.2% in quantity and 8.8% in value [3]. - The import of iron ore and concentrates in December was 11.97 million tons, with a total value of 85.80 billion RMB. The cumulative import for the year was 125.87 million tons, valued at 88.04 billion RMB, indicating a year-on-year increase of 1.8% in quantity but a decrease of 6.6% in value [3]. - The import of copper ore and concentrates in December was 270,000 tons, valued at 5.81 billion RMB, with a year-on-year increase of 7.3% in quantity and 33.4% in value. The cumulative import for the year was 3.03 million tons, valued at 59.39 billion RMB, showing a year-on-year increase of 7.9% in quantity and 24.0% in value [3].