一つの荷物に対してに最大限の数のアイテムを送りたいので、残り何キロまで同梱できるか教えてください。重さにまだ余裕があれば、さらに他の商品も購入したいです。
I would like to have maximum numbers of items stuffed up in one package, so please let me know how many more kilos could be bundled in the shipping package. If there were still some allowance in weight, I would like to purchace other items as well.