关于退货，在您正式决定退回中国之前，请提前告诉我们具体退货时间，给我们留下一个星期的时间。求翻译

for withdrawing, please inform me the withdrawing date one week advance to prepare before you make the final decision.

好像有点变扭。。。不好意思。。我不是专业做贸易的：）

for withdrawing ,please inform us the exact time for withdrawing one week in advance