Polyester chips (polyethylene terephthalate) yog polymerized los ntawm refined terephthalic acid (PTA) thiab ethylene glycol.Cov tsos yog nplej granular, thiab muaj ntau ntau yam (tag nrho lub teeb, ib nrab lub teeb, loj teeb, cationic, no extinction).Hauv kev lag luam quotation o ...
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