Dear Sirs,

敬启者：

Thank you for your letter of June 18 enclosing details of your terms. According to your request for opening an irrevocable L/C, we have instructed Mega International Commercial Bank to open a credit for US$ 50,000 in your favor, valid until Sep. 20. Please inform us by fax when the order has been executed.

非常感谢贵方 6 月 18 日有关条款详细情况的来信。根据你方要求开立不可撤销信用证，我方已经通知兆丰国际商业银行开立金额为 5 万美元的信用证，有效期至9 月 20 日。当你方执行订单时，请传真告知我方。

Thank you for your cooperation!

谢谢您的合作!

Sincerely yours,

ABC Company

ABC公司 谨上