Martine is a member of the Vereniging voor Pianotechnici Nederland, the Dutch and Belgian Piano Technicians Association. Membership of this trade association is only open to professional piano technicians.
As a Certified Piano Tuner, Martine has been formally recognized by the VvPN to be a good pianotuner.
In addition to this quality mark, the VvPN also has a dispute settlement procedure.
The VvPN organizes all kinds of activities – such as workshops – to keep the technical qualities of the members up to date and to follow developments closely.