1. Ƙarfe da aka riga aka rigaya an lulluɓe shi da Layer Layer, wanda ke ba da mafi girman kadarar lalata da kuma tsawon rai fiye da na galvanized karfe zanen gado.
2. Ƙarfe na tushe don Ƙarfe na Ƙarfe na Prepainted ya ƙunshi sanyi birgima, HDG electro-galvanized da zafi-tsoma alu-zinc mai rufi karfe.Za'a iya rarraba sutturar ƙarewar Rubutun Ƙarfe da aka riga aka shirya zuwa ƙungiyoyi kamar haka: polyester, polyester modified silicon, polyvinylidene fluoride, polyester mai ƙarfi, da sauransu.
3. Tsarin samar da kayayyaki ya samo asali ne daga sutura daya-da-baya zuwa ga mai-shafi-da-baki-baki-da-baki, har ma da mai uku-da-tuka.