Izigxivizo zebhodi lesifunda aziyona ingxenye yasekuqaleni ye-PCB; esikhundleni salokho, ziyizingxenye ezengeziwe ezingezwe ukuze zinikeze ukwesekwa kwesakhiwo nokuthuthukisa ukuqina. Ama-Stiffener abaluleke kakhulu kuma-PCB avumelana nezimo, lapho izindawo ezithile zebhodi zidinga ukungezwa...








