Just looked it up, and like every other nameless gas-station type ecig manufacturer I could find no information on connection types, Its likely another special machined type to only take the cigarex brand atomizer's.
95% chance of it being a crappy ecig. Dont get discouraged, when I started I bought a gas station type ecig myself even though I was waiting on a 510 kit to come in the mail.
There's no order information as far as I can see on the website. The photoshop picture they got up for the device makes it look like a 2 piece, but im guessing its actually 3 pieces because they use the term "cartridge" and the battery looks stand-alone. Are we talking about a disposable or the one with the cartridge that pops off?
If you can, try to back the threads off ever-so-slightly from the battery itself. If you can back it off a touch without making the thing not working you might get a better draw. You might try to fiddle around with the filler material in the cartridge as well.
But honestly, your likely better off trying to return the thing and buy a cheap 510 kit, ego kit, or maybe a kr808 kit from any of the suppliers listed on the forum. Stay away from mall kiosks, you'll pay $200 on a $40 kit there.