xìn yòng zhèng quàn
instrument of credit
letter of credit; see also 信用證|信用证[xin4 yong4 zheng4]; CL:張|张[zhang1]
信
xìn
letter
用
yòng
to use; to make use of; to employ
证
zhèng
certificate
券
quàn
variant of 券[quan4]
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