... when printing larger volume model lighter, save money;(3) cost-effective, can be processed in wide range temperature;(4) softer ... diameter of 3.0/1.75mm, variations + /-0.1mm,roundness +/-0.05mm;(6) 1 kg /plastic spool packaging, can be automatic ... that specialty in color formulation ,plastic modification, packaging, quality control ,producing control, we can do according to your requirements . ...