[经] export credit guarantee dept. of the board of trade

shāng wù bù de chū kǒu zhàn yòng bǎo zhèng bù ㄕㄤ ㄨˋ ㄅㄨˋ ㄉㄜ˙ ㄔㄨ ㄎㄡˇ ㄓㄢˋ ㄩㄥˋ ㄅㄠˇ ㄓㄥˋ ㄅㄨˋ