322.I am entrusted to place an order for 100 sewing machines at 250$ each.

323.This is our official trial order for 500 computers.

324.We need iron nails of all sizes.

325.If you can fill our order for 5000 ties very soon we ‘d like to place the order with you now .

翻译:
贵司货物的的最低订购量是多少？

我受委托订购每台为250美元的缝纫机100台。

这是我方500台电脑的正式试订单。

我们需要各种尺寸的铁钉。

如果贵方能很快执行我方5000条领带订单的话，我方想现在就下单。