I got all excited when I saw that. But, looking at their "About Us" page:
Established in 2008, Rotron Power Ltd is a specialist manufacturer of
advanced rotary engines for Unmanned Aerial Vehicle (UAV) applications
and is at the forefront of aviation technology.
One of their engines even lists a life expectancy of 100hrs. This is sad, 'cause I'd love to put a rotary in my 601XL.