Yes, your understanding is basically correct, that is, you need to issue separate statements on the above two points, indicating that you have implemented them in accordance with the requirements of the letter of credit. Just print it on your head with A4 paper. Print the company name and date below, and affix the articles of association in Chinese and English and the legal person's signature.

However, there are problems with the above two points. Literally, in addition to the statement, you need to send the original document to the sender. This is too risky, at least the bill of lading can't be sent to the consignee, so this needs to be changed by the other party.