SUNLU Non-Toxic PETG Black 3D Printing Filament 1.75 mm 1kg/ 2.2 lbs Spool. Suitable for all types of FDM3D printers, suitable for printing commonly used models, handicrafts, industrial parts, advertising characters, etc. SUNLU is a high-tech enterprise specializing in R&D, production and sales of 3D printing filament, 3D printer, 3D pen and 3D resin. We has our own professional team.