M'dziko lamasiku ano lofulumira, kumasuka komanso kusinthasintha ndizofunikira pakuyika zinthu. Chinthu chimodzi chomwe chakula kwambiri chifukwa cha ubwino wake wambiri ndi CPET (Crystalline Polyethylene Terephthalate). M'nkhaniyi, tikambirana ma tray a CPET ndi ntchito zawo zosiyanasiyana, maubwino, ndi mafakitale