Just got mine in the mail today!  I've gotta say these lighters are spot on replicas of the real thing.  The one and only difference I noticed is when you look at the bottom near the refill hole.  On my original Arc there is the turboflame logo with the registered trademark next to it.  On these lighters there is a sticker in its place that says made in China instead.

I guess like Gibran said its probably the same original manufacturer as every other aspect is identical.

Definitely a good find!