I have one of those at our shop and looked inside once. It was all made overseas and I couldn't find much more info. If I can find it I will look again and post what I find. I have sold a few simalar signs using cold cathode tubes in my own enclosure. I was able to get them cheap though a comuter case moding guy I know who imports them. They work almost as well as the fluorescent and run off of 12v dc which was better for my application.