The curves and arcs of the round arch can weaken the sharpness of the angles and soften the visual effect of the space. Its upper part is in the shape of a curved arch, which gives a sense of upward stretching and can visually enhance the height of the space

Aluminum alloy shutter is a kind of ventilation and rainproof decorative products made of aluminum alloy profiles. It has the characteristics of light weight, no rust, corrosion resistance, long service life, etc. It is widely used in the occasions that need ventilation and rainproof, heat insulation and heat preservation to regulate the airflow.

Guillotine window usually adopts one-fixed one-activated or one-fixed two-activated opening mode, i.e. one fixed window and one movable window or two movable windows design, which not only ensures the ventilation, but also provides the safety guarantee.

‌Folding windows‌ are windows with a unique opening method. Their main advantages include good lighting and ventilation, small space, easy operation and good anti-theft performance. The sash of the folding window can be fully opened, allowing light and air to enter the room freely, providing first-class lighting and ventilation effects