国际快递公司
1.Please accept our thanks for the trouble you have taken.
有劳贵方，不胜感激。
2.We are obliged to thank you for your kind attention in this matter.
不胜感激贵方对此事的关照。
3.We tender you our sincere thanks for your generous treatment of us in this affair.
对贵方在此事中的慷慨之举，深表感谢。
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