They were also rebadged by Alpa, so yes the same camera.
I had a CE4 and CE4s with the 50mm f1.9 and 50mm f1.4 Chinon lenses, plus power winders. A friend borrowed the CE4s and 50mm f1.4 lens and my Vivitar Series 1 70-210 zoom for a commercial job at the Le Mans 24hr race for Lucas, he normally only shot LF and MF. In the press tent they processed E6 films, and others were amazes at the quality of his results nor realising he was using a Chinon. Unfortunately they were later stolen.
In more recent years I;ve acquired two more with the same lenses, also the Chinon 135mm f2.8 which is a nice sharp lens, and a Chino 28mm f2.8 but this has too much barrel distortion to be any use.
Underrated cameras.
Ian