German specialty rubber manufacturer founded in 2010 by Guido Georg Heun in Muhlhausen-Ehingen. Specializes in disruptive rubbers for unconventional playing styles. Product range includes long pimples (Kamikaze, Fakir), short pimples (Firestorm), anti-spin (E.S.P.), and inverted rubbers (Tenacious Violence). Also produces blades under the Barna Original sub-brand. Known for innovative rubber designs that push ITTF rule boundaries. Targets advanced pimple players and material specialists seeking maximum disruption.