帮忙用英文回信谢谢

Thanks for your information! Please note the defects needn't to be return, you can dispose it!

Any questions,please feel free to let us know asap.

Dear XXX,

Well received your mail with many thanks, and we have well noted the modification of the quantity. We will follow.
你可以更改一下形式发票给客户。如果你改了并附上了，可以加上下面这句话。Please also find the enclosed our modified P/I for your file.

And regarding the defects, you do not need to return them to us, you can dispose them at your side.

If you have any other questions, plsae just feel free to let me know.

With my best regards,
XXX