A handshake and nod show respect when greeting someone.
An embrace and one kiss on the cheek are common between friends and acquaintances.
Argentines stand close to each other when speaking. Do not back away.
The “O.K.” and “thumbs up” gestures are considered vulgar.
- See more at: http://www.expats-moving-and-relocation-guide.com/nonverbal-communication.html/#nonverbalcommunicationinthailand