焦煤主力合约日内大跌4.00%，现报1187.00元/吨。焦炭主力合约日内大跌4.00%，现报1678.00元/吨。

Group 1 - The main contract for coking coal has dropped by 4.00% in a single day, currently priced at 1187.00 yuan/ton [1] - The main contract for coke has also decreased by 4.00% in a single day, currently priced at 1678.00 yuan/ton [1]