Kufotokozera mwachidule:

Tepi yochenjeza ya PE imatchedwa tepi ya barricade, yomwe imapangidwa ndi polyethylene monga maziko.Tepiyi ilibe zomatira ndipo siimamatira.
Chotchinga chenjezo chowopsa chimapangidwa ndi zinthu zolimba, zotanuka komanso zosagwira misozi ya polyethylene, mitundu yokhazikika ndi yofiira ndi yoyera, yakuda ndi yachikasu, kuti tikwaniritse zofunikira zosiyanasiyana, titha kusintha ma logo osiyanasiyana malinga ndi zomwe makasitomala amafuna.