Kukana kwanyengo kwamphamvu:Chosanjikiza chapamwamba ndi ASA / PVC polima coextrusion wosanjikiza, chomwe chimathandizira kwambiri kukana kwanyengo.Iwo sangakhoze kuzimiririka kwa zaka 7-10.Pambuyo pa zaka 10, pang'onopang'ono zimazirala pa mlingo wa 5% pachaka.
Olemera mumitundu yosiyanasiyana:Zogulitsa zathu za co extrusion zili ndi mitundu yambiri yamitundu ndi mitundu.Ngakhale mitundu yomwe ilipo komanso mitundu yomwe ilipo siyingakwaniritse zomwe makasitomala amafuna, titha kukupatsirani mtundu wamitundu ndi mitundu.