I wish I understood French! The cubes of Fer de Cheval always looked the smoothest compared to the other 3. The conveyor belts seem to the softer soap which I assume will be formed later. This seems to differ from other videos (of one of the other 3 - I forget which one) which pour and form them in large trays and cut them. I could be wrong though.I can say the ingredients and overall process is the same, but it's up to the individual Maitre Savonnier at each manufacturer to tweak the process to their individual liking and skill as SdM is an artisanal product. Michel Blanconi is Fer de Cheval's Maitre Savonnier and has been there for 40 years now.