Electric Saucepan A Question About Electric Cook-tops?

A question about electric cook-tops? - electric saucepan

I built a house and the builder in an electric frying pan, is headed by my first and give just 1.5 weeks pan. Some of the bits that light and heat of my pans have noticed that the pages look like burn marks or anything. When I rub my fingers for these brands is smooth, so I think that these "burns" occur in the glass, not the best. The best way I can explain is that you know how the above completely black, like glass in a car, so it looks like a piece of film that is burned into the glass which is quite remarkable. Why did it happen? Is this normal for the electric stove tops. It is new still in the ground.