There are so many piano brands in Germany, why not buy one from the East German Piano Association? What other brands are good?

The teacher of the Conservatory of Music warned: Why not buy the piano of the East German Piano Association? The reason has finally been found-

East German Piano Association | More and more people know, what is the "East German Piano Association"? , OEM, OEM its third-line and fourth-line Southeast Asia; Tell a joke: The difference between East Germany and West Germany is that the economy of East Germany is less than a quarter of the average level of West Germany, and there is a great brain drain in East Germany. Most East Germans drive buses, while most West Germans study economics, astronomy and philosophy. No one wants to marry a West German girl again, nor will they marry an East German. This is why West Germans have always said that East Germans are "hillbillies".