What brand of anti theft door plus cat s eye is good

Which brand is good...

It's not high-tech, the line of sight is clear, the installation is easy, and the materials are strong. . . >>>More

Anti-theft door plus cat's eye very, just buy one back in the hardware building materials market, the general cat's eye is also dozens of yuan, and then buy a larger than the cat's eye diameter of about 3 mm or so iron hole opener, you buy back with a box ruler to measure the height of the internal and external door panel of the anti-theft door and then open the hole, install it.

I searched for a lot of brands of anti-theft doors on the Internet, and the full name of anti-theft doors is "anti-theft security doors". It combines anti-theft and security performance. How much do you know about the role of the security door? >>>More

The security door itself does not wear a cat's eye. Because some thieves will steal through the cat's eye and open the door from inside the house. You can't observe outside the door without a cat's eye. So there are pros and cons to each. The one with a cat's eye should be bought and cannot be removed outside.

1 All of them are a combination of lenses.

Convex and concave lenses are used together. >>>More