Zingwe za thonje zimagwira ntchito yofunika kwambiri poteteza thonje kuti lisayambike posungira katundu ndi kutumiza kunja. Kachitidwe ka thonje kamakono kamafuna zomangira zomwe zimatha kupirira mphamvu zopondereza zopitirira 800kg kwinaku zikukhala zovutirapo nthawi zonse pamene mabale amakhazikika posungira ndikuyenda. Chingwe chopangidwa ndi thonje chopangidwa ndi PET chatuluka ngati yankho lomwe limakonda, chopatsa mphamvu zolimba kwambiri, kuchita zopanda dzimbiri, komanso kubwezeretsanso kwathunthu poyerekeza ndi njira zina zachitsulo. Nkhaniyi ikuyang'ana momwe zingwe za thonje zimagwiritsidwira ntchito poyambira ndi kusungiramo zinthu, imayang'ana zaukadaulo wofunikira pamitundu yosiyanasiyana ya bale, komanso imapereka malangizo othandiza kwa ogula ndi oyang'anira ntchito. Ku Jushuo Packaging, zomwe timapanga zikuwonetsa kuti zingwe za thonje zokhala ndi mphamvu zopumula kuyambira 160kg mpaka 1360kg zimatengera chilichonse kuyambira mabelo olimba kwambiri mpaka mabele a thonje opanikizidwa kwambiri padziko lonse lapansi.