... , food contact, skin contact. Filaments for 3D printer Characteristic 1. Filaments produced by biobased environmental materials PLA ,PVA and engineer ... low melting strength, easily shape when printing, shining surface, bright color;4. PLA filament has small shrinkage even when printing big ... 20%30Accuracy-2.94mm-2.98mm,1.7mm±1.74mm2.94mm-2.98mm,1.7mm-1.74mmColorsPLA -3mm/1.75mm Clear,red,green,yellow, ...