汉译英：能不能麻烦您早发货一周，因为我们8月3号要参加展会。货物运到北京后报关还需要一周的时间。

Could you pls shpping one week in advance.
cause we have to take part in exhibition date on 3-Aug-09,
there have need nearly one week time for customs when goods arrive to Beijing.

Trouble you can ship as early as one week, because we want to participate in event on August 3. Goods shipped to Beijing a week after the declaration of the time needed.

We hope you would be kind enough to ship one week in advance,for we are attending the Exhibition on August 3rd.It will take us another week to apply to customs after we receive the goods in Beijing.

强硬点的：
We need the goods to leave one week earlier,we are going to attending the show/exhibition on Augest 3, we need at least one week the declaration at the customs after receiving them in Beijing.

Could you please make the shipment one week earlier? Our show starts in Aug. 3rd, and it takes one week for the goods to go through the customs.

I'm sorry to bother you.we'll attend the exhibiti