写 一份英文发盘信 ^-^

Dear Sir ,
We have received you letter of 27th Aprial ,from which you are asking us CFR Sydney price for the China black tea .Now we offer a quotation about 500 cartons China Black Tea ,AUD 60 per carton CFR Sydney ,we will make a shippment on July 2010 .Terms of payment :irrevocable letter of credit to be drawn at sight .This offer is valid upon received your reply before 15th May .
Please note our offer is competitive ,we hope you can accept it immediately