Ngaphambi kwenkqubo ephambili ye-extrusion, i-polymeric feed egciniweyo ixutywa kunye nezongezelelo ezahlukeneyo ezifana nezizinzi (ubushushu, ukuzinza kwe-oxidative, ukuzinza kwe-UV, njl. umgangatho wemveliso kunye nokuqhubekeka.Mna...
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