this is your officially nickname Tang!
I dont know what my nickname should be... What nicknames guys usually have?
Can i ask about something? I dont understand nicknames in Thailand. You are Tangthai but i guess it is not your real name and surname, right? But in company do people call you Tangthai?
Here in Poland every name has a few versions. For example my name is Jakub but more friendly version of my name is Kuba. Friends, colleagues and family call me Kuba but my boss use Jakub. Is it same with Tangthai?