Hi you all :)
I recently bought some cheap Chinese fresnel lights just to see if they are any good or not. I wrote some thoughts to my blog, and there is also lots of images!
http://aapolettinen.blogspot.fi/2014/09/chinese-fresnels-are-they-any-good.html
I'd say it is very risky to order this type of gear directly from China. Luckily I have worked years with professional lights so I dared to try these cheap counterparts just to see if they can be used safely by anybody...