Cast aluminum parts mainly focus on surface oxidation removal, edge burr smoothing, surface roughening, matte finish, flatness, and rust treatment. These 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 caps, housings, pump housing, architectural fittings, decorative fittings, guard fittings, and aluminum wheel parts, among others.