[经] specially negotiating bank letter of credit

tè bié zhǐ dìng jié huì yín háng de xìn yòng zhèng ㄊㄜˋ ㄅㄧㄝˊ ㄓˇ ㄉㄧㄥˋ ㄐㄧㄝˊ ㄏㄨㄟˋ ㄧㄣˊ ㄏㄤˊ ㄉㄜ˙ ㄒㄧㄣˋ ㄩㄥˋ ㄓㄥˋ