Safety protection: the introduction of professional technology of American doors and windows, the use of high-density anti-theft steel wire materials and high difficulty of technical processing, the diamond net anti-theft screen has the functions of anti high impact, anti shearing, etc., truly achieving the seven in one function of anti mosquito, anti-theft and environmental protection. 2. Emergency escape: in case of fire accident, it has a patented emergency escape function, flexible The inner opening lock can be folded and opened freely to ensure that the precious time of escape will not be delayed and the safety will be out of danger. 3. Prevention of falling from height: equipped with double safety mechanical lock, it can prevent children and the elderly playing in the room from high-altitude accidents. 4. Invisible transparency: zero line of sight block, zero distance visual communication with the outside world, 24 hours a day can maintain the circulation of natural and fresh air