Sera ya polyethylene imatanthawuza kutsika kwa polyethylene ya molekyulu yokhala ndi mamolekyu olemera osakwana 10000, ndipo kuchuluka kwa kulemera kwa maselo nthawi zambiri kumakhala 1000-8000.Sera ya polyethylene imagwiritsidwa ntchito kwambiri mu inki, zokutira, kukonza mphira, mapepala, nsalu, zodzoladzola ndi zina chifukwa chaukadaulo wake wabwino kwambiri ...
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