Nankang is a Chinese company that uses Japanese manufacturing techniques to make tires in Taiwan and all over the world, some here in the states even.
however, more specifically that Milestar MS775 tire is manufactured in china. just fyi.
and, yeah man. i know all about the pain the dick of shopping for 15" tires.... it gets even worse if you're looking for very specific sizes due to fitment and even worse again if you want anything remotely close to a performance tire that isn't a drag radial, or $250 a pop.