Kab lus kawg peb tau kawm thawj ob txoj hauv kev los daws cov xim masterbatch tom qab siv ploj, hnub no Qingdao Sainuo polyethylene siv quav ciab chaw tsim tshuaj paus tseem coj koj los nkag siab txog ob qho kev daws teeb meem ntxiv.1. Oxidation kuj Tom qab oxidation, qee cov organic pigments degrade los yog hloov lawv cov c ...