Semi-worked thermoplastic filaments used for 3D printing; Semi-worked PLA filaments for use in 3D printing; Plastic filaments for 3D printing; Semi-worked PLA (polylactic acid) filaments for use in 3D printing; Semi-worked ABS (acrylonitrile butadiene styrene) filaments for use in 3D printing; Semi-processed polymers in pellet form; Semi-processed plastics; Semi-processed resins; Semi-worked rubber; Semi-processed synthetic resins; Semi-worked synthetic plastic and synthetic resins as semi-fi...