Hi JM!
Do you know Matthias? He is a dealer for Jet 1A. Same for Sandor, but he distributes them world-wide. And no, they are not manufactured in germany

. They are swiss and austrian made. And yes, Sandor is probably one of the biggest jet-sellers in germany, belgium and the netherlands. Even if he is not, who cares? It is part of the business to think you're the gereatest.
Best regards,
David