Sera ya polyethylene ingagwiritsidwe ntchito mu filimu ya polyethylene, filimu ya polypropylene, cellophane yotsutsa chinyezi, pulasitiki, ndi zina zotero.Amagwiritsidwa ntchito mu maswiti a zipatso, mkaka, madzi a zipatso, zinthu zosamalira khungu, mabotolo amankhwala, zotsukira, zopangira chakudya ndi ntchito zina za inki monga inki yosindikizira, etc., monga...
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