Unfortunately it's paywalled and in German, but according to an interview and investigation done by Süddeutsche Zeitung, they are indeed part of the Plymouth Br

Unfortunately it's paywalled and in German, but according to an interview and investigation done by Süddeutsche Zeitung, they are indeed part of the Plymouth Brethen: https://www.sueddeutsche.de/wirtschaft/abus-unternehmer-religion-1.4493053 https://www.sueddeutsche.de/wirtschaft/abus-unternehmer-reli...