寄送形式发票

Dear Mr.Green,

　　In reply to:your request,dated 14 July 2006,we have much pleasure in sending you our pro forma invoice in triplicate.

　　For your information,our offers usually remain open for about a week.Seeing that our nail clippers are selling very fast,we suggest that you act on the quotation without delay.

　　We look forward to hearing from you.?　　

　　Yours sincerely,Lui