L/C should be opened by the buyer 15 to 20 days before delivery.
信用證應該在交貨前15天到20天由買方開出。
A:L/C should be opened by the buyer 15 to 20 days before delivery.
A:信用證應該在交貨前15天到20天由買方開出。
B:I'll set about opening an L/C as soon as I arrive home.
B:我一回去就著手開證。

I’ll try to prove to you my credit.
你會發現我是很守信用的。
A:I'll try to prove to you my credit.
A:你會發現我是很守信用的。
B:We trust you and hope you'll live up to your credit.
B:我們相信你，希望你實踐你的諾言。

We hope you allow us to make payment in Pound Sterling.
希望你們能允許我們用英鎊支付貨款。
A:We hope you allow us to make payment in Pound Sterling.
A:希望你們能允許我們用英鎊支付貨款。
B:We can only accept 30% cash payment in Pound Sterling.
B:我們只能接受30%的付款以英鎊現金支付。

We shall regard it as a breach of contract,if you fail to open the credit in time.
如果你不能及時地開出信用證,我們將視為違約。
A:We shall regard it as a breach of contract, if you fail to open the credit in time.
A:如果你不能及時地開出信用證，我們將視為違約。
B:I don’t think anything like that will happen.
B:我想那種事不會發生的。
breach(n.)
違背，破壞

Do I have to pay you up front?
我需事先付款嗎？
A:Do I have to pay you up front?
A:我需事先付款嗎？
B:You receive a better price by paying it off now.
B:如果您現在就付清的話，您的價格會低一點。
up front
預先

Do you accept credit cards?
你們收信用卡嗎？
A:Do you accept credit cards?
A:你們收信用卡嗎？
B:No,we take cash and traveler's checks only.
B:不，我們只收現金和旅行支票。

What is the period of validity of the letter of credit?
信用證的有效期有多長？
A:What is the period of validity of the letter of credit?
A:信用證的有效期有多長？
B:The L/C remains validity until the 21st day after shipment.
信用證有效期到裝運后第21天終止。

I have to pay a deposit when I open a letter of credit with a bank.
我向銀行開信用證時得付保證金。
A:I have to pay a deposit when I open a letter of credit with a bank.
A:我向銀行開信用證時得付保證金。
B:You might consult your bank and see if they could reduce the required deposit to a minimum.
B:你可以向銀行咨詢一下，看看他們是否能把保證金降到最低的限度。

Is the wording of “confirmed” necessary for the letter of credit?
信用證上還用寫明“保兌”字樣嗎？
The credit is short opened to the amount of RMB100.
信用證的金額少開了 100元人民幣。
We ask you to extend the letter of credit till October 30.
我們請求你們將信用證的期限延長至10月30曰。
The letter of credit is cancelled due to the expiry of its validity.
信用證由于到期而作廢了。
expiry(n.)
滿期，終了