well, the first photo of this thread seem to be possible of being a WZ-10, because, currently the best chopper in china's inventory is the Z-9 or the Dolphin II, on the first picture, we can see that the tail's fin are the same as on a Dolphin and the hull structure is identical to the Z-9 that is behind, they are even using the same 4-blade rotor. the 2nd seem fake, the 3 one from the front is not much carateristic of any chopper but doesn't like a Cobra or Apache, i don't what the Eurocopter look like from the front. On the fourth, we can see the Dolphin-type tails fins.