Graupner went bakrupt in 2012 and 2013 SJ Inc. bought Graupner's assets and changed the name from SJ Inc. to Graupner in 2014. I also remember their vehicle line used to be called SJ Propo. Back in 2007 when I was searching for companies to make my ESCs, SJ was one of them, but they didn't want to make it the way I wanted. The good old days of early sensored vehicle only (Aveox still rocks) ESCs lol.