متن اصلی - انگلیسی - Basically, a letter of credit gives the seller...

Basically, a letter of credit gives the seller reassurance that he will receive the payment for the goods. In order for the payment to occur, the seller has to present the bank with the necessary shipping documents confirming the shipment of goods within a given time frame. It is often used in international trade to eliminate risks such as unfamiliarity with the foreign country, customs, or political instability.