[经] application for importation of controlled commodities, application for opening letter of credit

kāi fā xìn yòng zhèng shēn qǐng shū ㄎㄞ ㄈㄚ ㄒㄧㄣˋ ㄩㄥˋ ㄓㄥˋ ㄕㄣ ㄑㄧㄥˇ ㄕㄨ