[经] interest rate on loans secured by export trade bills

chū kǒu huì piào dān bǎo jiè kuǎn lì lǜ ㄔㄨ ㄎㄡˇ ㄏㄨㄟˋ ㄆㄧㄠˋ ㄉㄢ ㄅㄠˇ ㄐㄧㄝˋ ㄎㄨㄢˇ ㄌㄧˋ lv4