Die-cast aluminum parts primarily focus on surface oxidation removal, edge burr smoothing, surface roughness reduction, matte finish, flatness, and rust treatment. Die-cast aluminum parts can be manufactured into various components such as aluminum die-cast auto accessories, engine pipe fittings, engine cylinders, gasoline engine cylinder heads, valve rockers, valve supports, electrical components, motor end caps, housing shells, pump housing shells, architectural fittings, decorative fittings, guardrail fittings, and aluminum wheel parts, among others.