লেটার অফ ক্রেডিট

????? ?? ??????? ????? ?? ??????? (Letter of Credit ?? LC) ??? ???? ???? ?????? ???? ?? ????????? ??????? ??????? ?????? ????? ?????? ??????? ??? ????? ????? ????? ?????? ?????? ???? ???? ??? ??????? ??????????? ???????? ??????? ??? ?????? ???????? ??? ?????? ??????? ???? ??????? ??? ??? ?????? ???????? ????? ??????? ????? ?? ??????? ???? ???? ????

read more