• Nederlandse Groep van Vioolmakers (NGV,  www.ngv-vioolbouw.nl
  The objective of the NGV, founded in 1949, is to provide honest and professional information to string players.
  This means that we commit to providing advice to our clients, in the best possible way, about all matters related to resale, sale, repair, restoration etc. in our area of expertise.
  
      
• Entente Internationale des Luthiers et Archetiers d’art ( EILA,  www.eila.org )
  The EILA, founded in 1950, is the international organisation of violin- and bowmakers.
  Exchange of know-how between collegues in the field is stimulated, and a congress is organised every 2 years

Both organisations have similar objectives: to support musicians in a professional and honest way. Clients appreciate the fact that these professional organisations ensure reliability and know-how of their members.