Group 1 - The domestic futures market closed mostly lower on January 19, with notable declines in various commodities such as tin, lithium carbonate, butadiene rubber, glass, and iron ore, all dropping over 2.5% [1] - The leading gainers included pure benzene, which rose by 3.48%, and silver, which increased by 2.75%, indicating some positive movement in specific sectors [2] - The trading volume for the top gaining futures contracts was significant, with pure benzene reaching a transaction value of 941 million yuan, while silver had a transaction value of 2.698 billion yuan [2] Group 2 - The largest declines were seen in tin, which fell by 5.98%, and lithium carbonate, which dropped by 3.83%, reflecting a bearish trend in these markets [2] - Other notable losers included butadiene rubber and glass, both of which experienced declines of over 2.9%, indicating a broader weakness in the commodity sector [2] - The trading volume for the top losing futures contracts was also substantial, with tin's transaction value at 1.4074 billion yuan and lithium carbonate at 847.3 million yuan [2]