development. In 1901, most of the production was transferred to Florival near Wavre. The Rosport factory was shut down in 1908. The emergence of an industrial giant in Germany In 1885, Adolph Müller, commercial representative for the Spiecker & Co. Electric Company in Cologne, travelled to Rosport to get further information on the reliable accumulator running in Rosport already for several years. After spending a few hours with Henri Tudor, Müller was convinced that he had seen with his own eyes an innovation which could be developed on a large scale. The two men agreed to wait until the large-scale street-lighting system in Echternach had been put in place. Once that had passed the test, Müller would begin to market, in Germany, accumulators made in Rosport. On 15 July 1888, Müller concluded an agreement with the Tudor brothers which assigned to the Accumulatoren-Fabrik Tudor'schen Systems Büsche & Müller in Hagen the exclusive right to manufacture and market Tudor accumulators in Germany, central and eastern Europe, and Scandinavia. The agreement also provided for the sharing of technology and licenses. Henri Tudor moved to Hagen to provide technical assistance during the start-up of the factory. He returned to Rosport in late 1888. Two years later, the Accumulatoren-Fabrik Tudor'schen Systems Büsche & Müller, now renamed Büsche & Einbeck, concluded an agreement with Siemens & Halske and AEG to establish a joint-stock company, the Accumulatoren-Fabrik Aktiengesellschaft (AFA). The demand was booming and turnover reached 3 300 000 marks. In 1891, it established a central research laboratory, where Henri Tudor acted as a scientific adviser. The improvements that he made included the negative plate with scraped-off paste and the unitary plate (1891), the development of new foundry moulds for finer grooves (1895–1896) and a solution to the problem of capacity loss observed on negative electrodes (1895–1896). AFA occupied a leading position on the German accumulator market and AFA shares were quoted on the Berlin Stock exchange from 1894 onwards. AFA changed its name in 1962 to Varta Aktiengesellschaft. Industrial activities in Western Europe Henri Tudor took measures to make sure that his accumulator was manufactured and marketed in geographical areas where Adolph Müller had not been assigned any rights. He granted an operating licence to Piaux, Georgin, Bayeux & Co. in Reims. In 1888, that company began manufacturing Tudor accumulators at its factory in Jonchery-sur-Vesle. On 10 April 1889, he assigned the same rights to