Nine major protection features: Whole window imported from Europe with original packaging Open to get out of the outdoors and get close to nature Double opening method with middle and upper suspension, meeting personalized functional requirements Equipped with a butterfly shaped latch hinge with ventilation function, it can achieve continuous ventilation while keeping the windows locked, ensuring safety and maintaining indoor ventilation and ventilation Equipped with self-cleaning coating, always maintaining high clarity Gain greater living space Can be selected as a single group or combined with multiple groups Fashionable lifestyle for greater living space Can be matched with original curtains