In 1955, in association with the company CFAO (Cie Francaise de l'Afrique de l'Ouest), the family bought in Paris one of the best business in distribution of wines: Paris Medoc and its 450 shops in Paris. It is at this occasion that the Margnat family made its first significant step in the high quality rated wines (AOC or Appellation d'origine controlee) business which to then was limited itself to the Senailhac estate in Bordeaux area and that had been bought at the end of the 19th century by Edouard Margnat.

The end of the 50s and the beginning of the 60s were dedicated to the development and to the consolidation of the various activities around the wine business. New markets in Africa with the CFAO. Wine transporter ships. Development of the haulage. Starting up of the activity in the Pacific (New Caledonia). The professional bicycle team of the 60s with team members as prestigious as big Bahamontes or brothers Anastasi were a tremendous marketing vector building the brand recognition in France and abroad. Less positive have been the war of Algeria, the inflation and the price controls which followed and stopped the growth of the market segment of the wine of common consumption. Nevertheless it is at that time that the association with Lesieur allowed to work out the usage of light packaging (PVC). The quality of products and the technological advances had put the domestic group in a dominant position on its market.

The end of the 60s sees the consolidation of the main French companies of the industrial sector of wines of current consumption within the Company named 'Societe des Vins de France' which marketed up to 800 million bottles a year. The Margnat family sold its participation in 1973, convinced that the current wine would decrease and be replaced by quality wines. Of this period Jacques Margnat kept a lifetime appointment to the Office des Vins nominated by Edgar Faure, a post of Counselor at the French Foreign Trade for the representation of the French wine in the world, nominated by Jacques Chirac, and finally commander's title of the Agricultural Merit, by Michel Rocard, all the three being the Minister of the Agriculture at the time of nomination.