Request for Acceptance Letter To request for a formal acceptance letter, international student is required to fill out a Pre-Arrival Agreement and submit the documents as mentioned below to the Center for International Affairs (CIA), Walailak University. List of required documents Signed version of Pre-Arrival AgreementHealth Insurance Certificate*A Copy of Transcript andA Copy of Passport. How to Get a Health Insurance Certificate? International students MUST buy a personal health insurance providing a worldwide coverage with minimum coverage of 50,000 USD (returning expats, submitting proof of minimum 50,000 USD medical coverage).(One year coverage) Once you submit the Pre-Arrival Agreement attached with the required documents via https://cia.wu.ac.th/inbound-application-form/, the CIA will send the acceptance letter to you.