... variations + /-0.1mm,roundness +/-0.05mm;(6) 1 kg /plastic spool packaging, can be automatic feed;(7) to be applied ... filament:We select of premier grade ABS material, low water absorption, high tough. Factory direct sales, inexpensive, buy more, bigger ... and developing we have engineers that specialty in color formulation ,plastic modification, packaging, quality control ,producing control, we can do ...