... .75mm, variations + /-0.1mm,roundness +/-0.05mm;(6) 1 kg /plastic spool packaging, can be automatic feed;(7) to be applied ... a enough time (3-5 hours).II. Mix with colors masterbatch or colors powder, all which .certified with ROHS.III.Adjust ... and developing we have engineers that specialty in color formulation ,plastic modification, packaging, quality control ,producing control, we can do according ...