YOUSU 3D Printer Filament Galaxy PETG Filament +/-,Glow in The Dark Laser Chameleon Series 3D Printing Filament Bundle,Multi Color Filament 250g X 4 Color Pack
Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.