国内期货主力合约涨跌互现，铂金、氧化铝、焦煤涨超4%

Group 1 - Domestic futures main contracts showed mixed performance with platinum, alumina, and coking coal rising over 4% [1] - Polysilicon and caustic soda increased by more than 3%, while polyvinyl chloride (PVC), silicon iron, and industrial silicon rose over 2% [1] - On the downside, apple prices fell by more than 3%, and international copper, Shanghai tin, Shanghai copper, Shanghai aluminum, Shanghai silver, and rapeseed oil dropped over 1% [1]