Calculate volume to find the Cabinet cannot put down all pallets of goods, therefore notice 602 of the 673 factories and goods, so that's what mix of goods.
Because the calculated volume can not be found in the cupboard to play down the whole pallet of goods, so notice to 673 factory 602 goods and goods together, it will happen in case of mixed cargo.
Because the calculation volume after found that the cabinet can not put down all pallets of goods, so the notice 602 of the goods to 673 factories and goods, so will the occurrence of mixed goods.