Aluminum alloy doors and windows refer to doors and windows made of aluminum alloy extruded profiles as frames, stiles, and fans. They are called aluminum alloy doors and windows, or aluminum doors and windows for short. Aluminum alloy doors and windows include doors and windows made of aluminum alloy as a force-bearing member (a member that bears and transmits its own weight and load) and wood, plastic composite doors and windows, referred to as aluminum-wood composite doors and windows, aluminum-plastic composite doors and windows.

The advantages of casement windows are large opening area, good ventilation, good sealing, excellent sound insulation, heat preservation and impermeability. The inward-opening type is convenient for cleaning the window; the outward-opening type does not take up space when opened. The disadvantage is that the window width is small and the field of vision is not wide. Opening the external window takes up a space outside the wall, and it is easy to be damaged when the wind blows; while the inward opening window takes up part of the indoor space, and it is inconvenient to use screens, and it is also inconvenient to use screens, curtains, etc. when opening the window , if the quality is not up to standard, it may also seep rain.

The advantages of sliding windows are simple, beautiful, large window width, large glass block, wide field of view, high lighting rate, convenient glass cleaning, flexible use, safety and reliability, long service life, open in one plane, less space occupation, and convenient installation of screen windows wait. Sliding windows are the most widely used by consumers. The disadvantage is that the two windows cannot be opened at the same time, they can only be opened halfway at most, and the ventilation is relatively poor; sometimes the sealing is also slightly poor. Sliding window: divided into left and right, up and down sliding two kinds. Sliding windows have the advantages of not occupying indoor space, beautiful appearance, economical price and good airtightness. It adopts high-grade slide rails, which can be opened flexibly with a slight push. Coupled with large pieces of glass, it not only increases indoor lighting, but also improves the overall shape of the building. The window sash is in a good stress state and is not easy to be damaged, but the ventilation area is limited to a certain extent.