... patent.The quality and the production capability are guranteed.2kg/roll, 1kg/roll PLA filament 3mm/1.75mm glow-in-dark ,black ... 3D printer like RepRap, Makerbot, Mendel, Huxley UP! Printers, Thing-o-matic , Ultimaker and so forth in assorted diameters since 2009. Esun ...