What is that? (at the top of the case) It's not liquid cooling.

[7amood]

I found out that the case is Thermaltake Kandalf... pretty old but...

still don't know what's the thing at the top bay of the case... looks like fan control or something.

http://img.photobucket.com/albums/v506/ROCK403/FrontOpen.jpg

 

[cjl]

Fan controller would be my guess.

 

[7amood]

would like to know which manufacturer is it

 

[DeeTee_uk]

It's a Thermaltake Kandalf (nice case btw). It looks very much like a fan controller, as cjl said. My guess would be it's been fitted with one of these:
http://www.thermaltake.com/product/DCfan/VR/vr_index.asp
I take it each of those blue circles is a dial?