This cash-on-the-barrelhead approach is different from the payment methods common in Japan and the U.S., such as the commercial letter of credit.
這種「一手交貨，一手交錢」的方式，不同於與美、日貿易的付款方式，如開 L／C（信用狀），及 D／P（documents against payment bill 付款交單）、D／A（documents againstacceptance bill 承兌交單）等。