[经] exchange settlement certificate for letter of credit

xìn yòng zhuàng jié huì zhèng míng shū ㄒㄧㄣˋ ㄩㄥˋ ㄓㄨㄤˋ ㄐㄧㄝˊ ㄏㄨㄟˋ ㄓㄥˋ ㄇㄧㄥˊ ㄕㄨ