Write a letter in 130-150 words.

Write a letter in 130-150 words.
敬启者：
根据ABC公司经由我华盛顿分行发来的指示，现开立以贵公司为收益人的、金额为6万美元的不可撤销信用证，有效期至5月31日。贵公司在向ABC公司发运6 000件衬衫后可凭信用证向贵行开出发票金额的60天期票。
期票须随附下列单据:提单一式三份、商业发票、保险凭证、原产地证书各一份。于我行承兑后，将单据交给我行。
在贵公司履行信用证条款的条件下，我行将承兑并于期满时支付信用证项下提示的汇票,如需要，可按利率进行贴现。
【正确答案】：Dear Sirs,
On instruction from ABC Company, received through our Washington office, we have opened an irrevocable letter of credit for US $ 60,000 in your favor,valid until May You have authority to draw on us at 60 days' against this credit for the amount of your invoice upon shipment of 6,000 shirts to ABC Company.
Your draft must be accompanied by the following documents, which are to be delivered to us against our acceptance of the draft：bill of lading in triplicate,commercial invoice,insurance certificate and certificate of origin.
Provided you fulfill the terms of the credit,we will accept and pay at maturity the draft presented to us under this credit and, if required, provide discounting facilities at current rates.
Yours sincerely,
Jackson Hoffman