19. Second, as far as the history of creation of exclusion (b) in the General Explanatory Note to Chapter 4 is concerned, the Secretariat’s archives show that this text was already found in the Brussels Nomenclature 1955 and has remained essentially unchanged during the drafting and subsequent review of the HS. The Secretariat has not been able to find any information with regard to the type of products that the drafters of the Brussels Nomenclature had in mind when creating this exclusion.