UpSolution Aviation, s.r.o.
The Group for Complex Avionics, Engineering and Design Solutions.
Reiser System Technik GmbH,
Stock FlightSystems,
Vehicle Engineering International C.G.D. sro,
Otrusina s.r.o.,
Composite Airplanes s.r.o.,
Praga a.s.,
LOM Praha, VTUL,
VOP26,