Complex sentence: Albert Hejin supermarket in Eindhoven has started chocolate 3D printed decorations on cakes, that offered a Doodle3D to let the customers design their own personalized decorations, so the STL files are printed to a byFlow portable 3D printer.
Split into simpler sentences: Albert Hejin supermarket in Eindhoven has started chocolate 3D printed decorations on cakes. The customers can design their own personalized decorations using Doodle3D and the so created STL files are printed to a byFlow portable 3D printer.