[经] expiration date of letter of credit, expiry date of l/c

xìn yòng zhuàng yǒu xiào qī ㄒㄧㄣˋ ㄩㄥˋ ㄓㄨㄤˋ ㄧㄡˇ ㄒㄧㄠˋ ㄑㄧ