The same factory which produces Jart decks, and pressumably they will be using the same wood. Of course cheaper and worst.
Jart has a bad name, but If you have ridden a jart board in the last year you'll notice the difference.
When was the last time you rode a Jart board? The last one I rode this winter was really good. One thing is their art direction, that is really shitty, one other thing is their team, and one final thing is their product.
Unless you strictly use American brands, there are so many brands using their wood, that you probably used them without knowing it was a Jart.
Also, I doubt Joe Castrucci would approve Habitat european boards to be manufactured by Jart if he wasn't satisfied by the quality.