https://www.sussexchamberofcommerce.co.uk/global-trade/letters-of-credit.html
letters of credit
https://www.investopedia.com/terms/l/letterofcredit.asp
Explore what letters of credit are, their types, costs, and real-world examples to understand their role in facilitating secure international trade.
letters of creditunderstandingdefinitiontypesusage