Its most famous products are Grand cru and Signature series. These chocolates are famous for their high quality and unique flavor. For example, Grand cru chocolate is highly praised for its five core flavors (dark chocolate, milk chocolate, white chocolate, plum wine and orange flavor) and a variety of cocoa beans. Many chocolates they provide have historical and traditional backgrounds. For example, their dark chocolate cake in Sao Tome and Principe was made according to the recipe of Antoine Du Lei, the private chocolate maker of French King Louis XV.
However, due to the vague description, the above may not be the correct answer. More chocolate brands in France or other countries may fit this description.