This document discusses letters of credit and their financing process. It describes how an importer applies for a letter of credit by presenting evidence of an import contract to a bank. If approved, the bank issues the letter of credit to the exporter. The exporter then ships the goods and submits required documents to receive payment based on the terms of the letter of credit. The process involves several parties including the importer, exporter, issuing bank, advising bank, and sometimes a confirming bank. Letters of credit can be classified in various ways such as revocable or irrevocable, and involve payment methods like sight or acceptance. Required documents typically include a commercial invoice, insurance certificate, and customs documents.