ロールス・ロイス・ホールディングス
Rolls-Royce Power Systems AG is a German company owned by Rolls-Royce Holdings with holdings in engine manufacturing brands and facilities. The company previously traded, from 2006 to 2014, as Tognum AG. Prior to 2006, the core company - MTU Friedrichshafen GmbH - was a constituent of DaimlerChrysler Powersystems Off-Highway.