客气的催款函

Dear Mr.Green，

　　We’ve appreciated a good business relationship with you over the past three years,and want to serve your interests fully.

　　I’m concerned,however,by your current account balance,which is 50 days in arrears.Please take a moment to check on the status of our invoices to your Accounts Payable desk.You now owe a total of $2 389.88,and we request payment immediately.

　　Call me at 283-2837 if I can provide further information or assist you.

　　Sincerely,Tang Han

　　Credit Manager