He and his brother Frantz Wittouck became the largest sugar manufacturers in Belgium in the period leading up to the Great War.

[3] In January 1884 there was talk of the sugar factory of Paul Wittouck in Breda and Bergen op Zoom.

[6] The brothers faced fierce competition from other sugar manufacturers in Belgium, but emerged as the dominant firm.

[5] The Wanze and Tienen plants were integrated into one industrial group shortly before the outbreak of World War I in 1914.

[9] Sue, Huillard and Jaulmes avoided Art Nouveau for the château, and instead chose the fashionable Louis XVI style "à la Greque".