无形的防卫线

In terms of security: pushing for the stealth dooryard 80 95, effectively prevent the elderly and children at an altitude of security and safeguard the high altitude sinkers. Invisible dooryard once made to destruction, product automatic alarm inform host and photography exists.In the beautiful respect: the diameter of the invisible dooryard to 1.8 mm, distance 10-15 meters above see the structure of products, efficiently keep building exterior, replace traditional, wrought iron safety.