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 accessories, engine pipe fittings, engine cylinders, gasoline engine cylinder heads, valve rockers, valve supports, electrical components, motor end covers, casings, pump casings, architectural fittings, decorative fittings, guard fittings, and aluminum wheels, among other components.