Share on ... Google+ Twitter LinkedIn Facebook Pinterest Telegram This is an old revision of the document! WON board: Chair:G. YpmaASML Netherlands BV Secretary:F. PersijnQuestel Treasurer:J. HehenkampAlbemarle Catalysts Board member:G. GielingSynthon BV Board member:M. MensingFrieslandCampina Contact For membership application, posting vacancies or any WON information, please contact our secretary WON Secretary Fabienne Persijn ☎ +32 (0)474 842 380 secretary