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Door and window anti-fall chains are suitable for installation on various types of doors and windows, including:

- Casement doors and casement windows in high-rise residences (especially in areas with frequent personnel activities such as bedrooms and balconies);

- French windows and large-sized casement windows in villas (to balance ventilation and safety); - Various doors and windows in children's rooms and elderly rooms (to strengthen protection);

- Wooden and steel doors and windows in old residential areas (to make up for the lack of stability after doors and windows age);

- Balcony sliding doors (need to choose anti-fall chain styles adapted to sliding structures);

- Casement doors in kitchens and bathrooms (corrosion-resistant materials should be selected in humid environments). However, for doors and windows with weak load-bearing capacity such as pure glass frameless doors and extremely light aluminum doors and windows, it is necessary to first confirm whether the frame strength can bear the tension during the installation and use of anti-fall chains.