Aluminum die-casting automobile engine pipe fittings, aluminum die-casting engine cylinders, aluminum die-casting gasoline engine cylinder heads, aluminum die-casting valve rockers, aluminum die-casting valve seats, aluminum die-casting power accessories, aluminum die-casting motor end covers, aluminum die-casting shells, aluminum die-casting pump casings Body, aluminum die-casting building accessories, aluminum die-casting decorative accessories, aluminum die-casting guardrail accessories, aluminum die-casting aluminum wheels