进出口商在选择信用证方式结算时，买卖合同中的支付条款应明确规定开证行、开证时间、信用证付款期限、信用证有效期和到期地点、兑付方式以及所需单据等内容。
例（1）：即期信用证支付条款
买方应通过为卖方所接受的银行于装运月份前××天开立并送达卖方不可撤销即期信用证，有效期至装运月份后第15天在中国议付。
The buyer shall open through a bank acceptable to the sellers an irrevocable sight letter of credit to reach the sellers days before the month of shipment, valid for negotiation in China until the 15th days after the month of shipment.
例（2）：远期信用证支付条款
买方应通过为卖方所接受的银行于转运月份前××天开立并送达卖方不可撤销见票后30天付款的信用证，有效期至装运月份后15天在上海议付。(www.xing528.com)
The buyer shall open through a bank acceptable to the sellers an irrevocable letter of credit at 30 days sight to reach the sellers XX days before the month of shipment, valid for negotiation in Shanghai until the 15th days after the month of shipment.
例（3）：循环信用证支付条款
买方应通过卖方可接受的银行于第一批转运月份前××天开立并送达卖方不可撤销的即期循环信用证，该证在××年期间，每月自动可供金额××（金额），并保持有效期至××年1月15日在北京议付。
The buyer shall open through a bank acceptable to the sellers an irrevocable revolving letter of credit at sight to reach the sellers XX days before the month of first shipment.The credit shall be automatically available during the period XX for XX (value)per month, and remain validity for negotiation in Beijing until January, 15th, XXX.
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