国债期货午盘多数下跌，30年期主力合约涨0.02%

Group 1 - The core viewpoint of the article indicates that the majority of government bond futures experienced a decline during the midday session on December 25, with the 30-year main contract slightly increasing by 0.02% to 112.800 yuan [1] - The 10-year main contract decreased by 0.01% to 108.200 yuan, while the 5-year main contract also fell by 0.01% to 106.015 yuan [1] - The 2-year main contract remained unchanged at 102.524 yuan [1]