请帮忙翻译英文“麻烦确认下 两套文件各寄一份还是两份 是否需要盖章 请顺便告知地址以便邮寄”

Please help to confirm that for the following 2 sets of document,shall we send one copy for each set or two copies for each set?Whether the seal is needed?Please also tell us the
mailing address in order to send them to you.