Curtain wall engineering refers to the installation and construction work of metal panels or safety glass used as building envelope components and decorative facades. Metal panels or safety glass are fixed within a metal frame using bolts or rubber spacers, and gaps are filled with sealant to prevent water ingress and provide insulation. The metal frame is pre-fixed to the main structure of the building using steel fasteners. The installation of the curtain wall must comply with design requirements, and the installation must be secure to ensure safety.