They can fly them in no?
They are only 1/2" valves and if you really really need these particular valves then you need to look far and wide.
Or you may need someone in the US or europe to buy them for you and then ship them as they may not deal with you due to issues over who they can sell to.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.