Just expanding on Simon's reply. The "standard" fretwire is an alloy called nickel silver (or commonly just referred to as nickel).
Asian made kits will most definitely be nickel fretwire unless an optional upgrade for another was offered.

That said, not all nickel silver is not created equal. I am by no means a metallurgist, but the nickel silver "recipe" will vary depending on where it's manufactured. I will say that inexpensive fretwire made in China is not going to be as good a quality as from the USA.
The basic difference will be the "hardness" of the metal. The fretwire I buy is MIA and I have definitely noticed a difference in it's durability compared to import guitars and certainly kit frets.

There is a relatively new-ish fret material available called EVO Gold which is a copper alloy. It has a goldish-brass colour and supposed to be harder wearing than nickel but more easily workable than stainless steel. I'd like to try it, but I have at least 3 fretboards worth of nickel fretwire in my supplies and it's more than twice the price of nickel and over 10% more than SS. (EVO Gold: $55AU/1.8m)