i think that the logo is that wich is in the faceplate and in the side of the kals picture in the can

I am thinking exactly the same thing, but I am always last to say it
Yeah, look at that catalogue image with Gahlok-Kal that holds Tahu Nuva's symbol. There you can see a circle on Tahnok-Kal's head, and it says something about it. I will look on Image Archive...

Moving to Theories...