In addition, S & S sells inexpensive schoolboy clarinets produced by the company Buffet Crampon Deutschland GmbH, Markneukirchen, under the trademark "W. Schreiber ", in a revised form in their own workshop, as well as in the middle price range clarinets of the company F. Arthur Uebel, also based in Markneukirchen, which advises Jochen Seggelke since 2014 in acoustic and technical questions .