Group 1 - The domestic futures market closed mostly higher on December 22, with the European shipping main contract rising by 8.77% [1] - Palladium and platinum main contracts increased by over 4.5%, while Shanghai silver and nickel main contracts also saw significant gains [1] - The average monthly main contract for plastic fell by 2.53%, with both plastic main and polysilicon main contracts dropping over 2.0% [1] Group 2 - Leading gainers included the European shipping main contract with an increase of 8.77%, closing at 1,871.84 yuan and a transaction volume of 8.02 billion yuan [2] - Palladium main contract rose by 7.05% to 8,450 yuan with a transaction volume of 136.45 billion yuan, while platinum main contract increased by 6.99% to 5,685.45 yuan with a transaction volume of 295.41 billion yuan [2] - Leading decliners included the average monthly main contract for plastic, which fell by 2.53% to 6,154.01 yuan with a transaction volume of 1.47 billion yuan [2]

Group 1 - The domestic futures market closed mostly lower on December 19, with the average monthly price of plastic futures dropping by 2.91% [1] - Major declines were observed in plastic, aluminum oxide, vegetable oil, and glass futures, all falling over 2.0% [1] - Conversely, lithium carbonate futures increased by 3.86%, while paraxylene and European shipping futures rose by over 3.5% [1] Group 2 - The leading gainers included lithium carbonate futures, which rose by 3.86% to a price of 111,400 yuan, with a trading volume of 1.94 billion yuan [2] - Other notable gainers were paraxylene futures, up by 3.77%, and European shipping futures, which increased by 3.66% [2] - The leading decliners included plastic monthly average futures, which fell by 2.91% to 62,480.01 yuan, with a trading volume of 1.55 billion yuan [2]