How to say "Do You Have?" in Chinese:

You3 mei2 you3 --- ?

What are these numbers? 

You3 = have
mei2 you3 = don't have
--- = (the thing you're asking about)

"You3 mei2 you3" means "Have, not have?" and is a very common way to ask Do you have --- ?. Simply say the thing you are asking about after saying you3 mei2 you3.