To tell you frankly, in opening a letter of credit with a bank I have to pay a deposit.

信用证付款是我们与所有客户交易通常的付款方式。

youdao

We have large order this time, we hope you can agree to D/P terms, for we have to pay a deposit in opening a letter of credit that is time-consuming and costly.

考虑到我们订单数量很大，希望你们能接受付款交单的付款方式，因为开信用证既耗时间又费钱。

youdao

Either because the credit amount is too large, or because he does not fully trust the opening bank, sometimes the exporter may require a confirmed letter of credit.

要么因为信用证金额过大，要么因为对开征行不完全信任，出口商有时可能需要保兑的信用证。

youdao