Les Ateliers de Construction du Nord de la France
Les Ateliers de Construction du Nord de la France was founded in 1882 as a subsidiary of Franco-Belgian company La Métallurgique. The company was established to avoid import tariffs imposed in 1881 in France on goods imported from Belgium.
In 1908 the company merged with and absorbed Société Nicaise et Delcuve (based in La Louvière, Belgium), and was renamed Ateliers du Nord de la France et Nicaise et Delcuve by 1910.
In 1913 the Trust Métallurgique Belge-Français reorganised; the factories in La Louvière, Belgium (the former Nicaise et Delcuve) were combined with other of the Trust Métallurgique Belge-Français interests in Belgian industry (including La Société la Brugeoise) to form La Société La Brugeoise et Nicaise et Delcuve, and the Ateliers du Nord de la France became an entirely French concern.
The above information is taken from the first part of the Wikipedia entry for Bombardier Transport France.