YOUSU PETG 3D Printing Filament, Neatly Wound, Less Prone to Clogging, 1kg Spool (2.2 lbs), Dimensional Accuracy +/-, Suitable for Most FDM Printers (Black)

Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.