国内期货19日收盘多数下跌，塑料月均主连下跌2.91%

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]