Looks similar to the manker light available at dx
I have that manker light here and anodizing and general quality is quite good. from the pictures from ebay it looks way better than the thorfire.
Found another OEM at the SecurityIng shop: http://de.aliexpress.com/item/SecurityIng-Pocketsize-415LM-3-Mode-XPG-R5-LED-Professional-Outdoor-Flashlight-Torch-with-Moonlight-Mode/32349732457.html?isOrigTitle=true
It seems SecurityIng sources his goods from various suppliers/brands (e.g. Nitefighter, Uranusfire, Thorfire) but with small variations in detail. (Or is it all Epathchina with different brand names?)
Compared to the Thorfire TG06 I see (beside the obvious tailcap colour) a difference in the pill/driver design. On the SG7 pictures one can see a brass retainer ring holding down the driver (?) while on my Thorfire TG06 the driver is soldered to the pill.
The much higher lumen spec could be Chinese mumbo-jumbo or an indication for a differnet driver type. Both lights are capable to use a 14500, though.