铁矿石主力合约日内涨幅扩大至2%报787.00元/吨。多晶硅期货主力合约涨超6%，报45065元/吨。

Group 1 - The main contract for iron ore has increased by 2%, reaching 787.00 yuan per ton [1] - The main contract for polysilicon futures has surged over 6%, now priced at 45065 yuan per ton [1]