Black oxide ko blackening shafi ne na juyawa don kayan ƙarfe, bakin karfe, jan ƙarfe da jan ƙarfe na tushen gami, tutiya, ƙurar foda, da siyar da azurfa.[1]Ana amfani da shi don ƙara juriya mai sauƙi, don bayyanar, da kuma rage girman haske.[2]Don cimma maximal lalata res ...
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