The most commonly used method is letter of guarantee. You submit a letter of guarantee to the shipping company and promise to submit the original bill of lading within 7- 10 days. But in general, shipping companies do not accept commercial guarantees (company guarantees) unless your company has sufficient credit strength. So you have to go to your issuing bank to open a bank guarantee (you have to promise the bank that you will pay the bill after the presentation of the letter of credit arrives, or your company will pay the full amount of the letter of credit to the bank in advance, and then the bank will open a guarantee for you to the shipping company, and the shipping company can release the goods for you when it sees this guarantee).