Velka Bites – PBS Velka Bites, a member of PBS GROUP, ranks among the world’s leading developers and manufacturers of turbojet engines for unmanned applications. At the same time, it is one of only four companies worldwide producing certified auxiliary power units (APUs) for aircraft, helicopters, and unmanned systems. Today, the prominent Czech manufacturer was visited by the Minister of Defence, Jaromir Zuna, who familiarized himself with the company’s production capabilities.