I would like to ask you a question. If I have a 1 year business visa. But before leaving Thailand I did not make re-entry? I need to come back to Thailand before the end of NON-B visa. Can I have problem to enter Thailand again?
TLDR : Answer Summary
If you have a 1-year business (NON-B) visa and leave Thailand without obtaining a re-entry permit, you may face issues when trying to return before the visa's expiration. It's important to check the type of visa you hold, as having a multiple-entry visa might allow for re-entry, while an extension of stay based on employment may lead to complications.