Door design consideration mainly as below:1, Where the building and inner door located2, Where the interior door located3, Number of times a door opens and closes Main concern points for this configuration are:1, user-friendly2, Security Door opening & closing description:Push or pull to opening the

A bathroom door handle is an easy way to make the bathroom more sanitary. Public restrooms are full of bacteria, so it's important to eliminate these germs. A new product has been created by two Hong Kong teenagers. It uses titanium dioxide, a chemical that kills bacteria.