国内期货22日收盘多数上涨，欧线集运主连上涨8.77%

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]