First understand the classification and advantages of aluminum alloy windows. Aluminum alloy windows are the first products to replace steel windows. They are made of aluminum alloy extruded profiles as frames, stiles and fans. Ordinary aluminum alloy sliding windows use aluminum alloy as the main material, and have better sealing and sound insulation effects than steel windows. It is also easier to process than pure wooden windows and steel windows. 1. Classification of aluminum alloy windo......