M'dziko lamasiku ano lokhazikika, kuvuta ndi kusinthasintha ndikofunikira pakupanga mankhwala. Zinthu zina zomwe zakula kwambiri chifukwa cha mapindu ake ambiri ndi chimbale (ma crystalline polyethylene terephthalate). Munkhaniyi, tidzakambirana zojambula zamitchi ndi kugwiritsa ntchito kwake, mapindu, ndi mafakitale