![](http://www.blueskyrotor.com/blog/wp-content/uploads/2013/02/WZ10-03-150x150.jpg)
you will recognize:
http://www.blueskyrotor.com/performance/datasheet/Changhe__Aircraft/WZ_10-WZ_10-SAEC
http://www.blueskyrotor.com/performance/datasheet/Harbin__Aircraft/Haitun-Z_9-W
http://www.blueskyrotor.com/performance/datasheet/AviCopter/AC313-AC313
and some Mi-8/Mi-17