[经] letter of credit with t/t reimbursement clause

gēn dān diàn huì xìn yòng zhuàng ㄍㄣ ㄉㄢ ㄉㄧㄢˋ ㄏㄨㄟˋ ㄒㄧㄣˋ ㄩㄥˋ ㄓㄨㄤˋ