並前往https://www.5metal.com.hk/content/%E8%A2%8B%E9%BC%A0%E7%89%8C%E5%BD%88%E6%80%A7%E5%A1%AB%E7%B8%AB%E8%86%A0%E9%98%B2%E9%9C%89%E9%98%B2%E6%B0%B4%E5%BD%A9%E8%89%B2%E5%A1%AB%E7%B8%AB%E5%8A%91-joints-and-gaps%E8%A2%8B%E9%BC%A0%E7%89%8C%E5%A1%AB%E7%B8%AB%E8%86%A0%E9%98%B2%E6%B0%B4%E5%A1%AB%E7%B8%AB%E8%86%A0