Theft-proof cat's eye glass is broken

Theft-proof cat's eye glass is broken and can be reinstalled.

The cat's eye of the security door can be unscrewed, which is usually standard and can be bought anywhere.

If the cat's eye on your door hasn't been installed for a long time, go to the merchant who sold it to you. Small things like this are generally exchanged.

If it is a newly purchased commercial house, you can go directly to find the property. After the newly developed buildings here are equipped with security doors, the cat's eyes are usually taken down and handed over to the property for safekeeping. After the house is sold, it will be installed according to the owner's requirements.