I'm not sure if I'm following so I'm sorry if this is a broken-record of a question:
Im from the US, I have a 6 month multiple-entry F visa right now that I got back when I was a student. But now I'm not a student, nor working in a big company. Is an invitation letter from a friend's business in China going to be ok? If they say I'm doing volunteer work there would that help? and does it need to be a formal document or is it literally "dear-so-and-so, Kara is a good person please let her in to China again thanks?"
I'm going to Bangkok to renew my F visa - it will expire August 31st and I'll apply for a new one there since its cheaper and I'll already be there for vacation anyway - possible? Thanks!