Our premium aluminum sash is made of high-strength aluminum alloy, featuring solid structure, light weight and excellent load-bearing capacity. It undergoes professional surface treatment to resist rust, corrosion and color fading, maintaining a neat appearance for years. Designed with precise craftsmanship, it fits tightly with frames for great airtightness and watertightness. We supply various specifications and support custom processing, ideal for assembling windows and doors in residential, commercial and engineering projects.