Cast aluminum parts mainly focus on surface oxidation removal, edge burr smoothing, surface roughening, matte finish, flatness, and rust treatment. Cast aluminum parts can be manufactured into aluminum die-cast auto parts, aluminum die-cast engine components, aluminum die-cast engine cylinders, aluminum die-cast gasoline engine cylinder heads, aluminum die-cast valve rockers, aluminum die-cast valve supports, aluminum die-cast electrical fittings, aluminum die-cast motor end caps, aluminum die-cast enclosures, aluminum die-cast pump housings, aluminum die-cast building accessories, aluminum die-cast decorative fittings, aluminum die-cast railing components, and aluminum die-cast aluminum wheels, among other components.