Kuti musunge katundu wambiri pazitsulo ndi ntchito yomanga, mumafunikira zingwe zolimba, zotetezeka komanso zotsika mtengo. Chingwe cha PET, chomwe chimapangidwa kuchokera ku Polyethylene Terephthalate, chakhala yankho lamakono ndipo tsopano chikugwiritsidwa ntchito m'malo momanga zitsulo m'malo osungiramo zinthu, mabwalo opangira zinthu, ndi malo ogulitsa.