Along with the technological advance, the glass are designed not only to be just glasses, they are made resistant to fire, but also developed as liquid glass, which becomes a block when it is not connected with electricity, and a clear glass when it is connected with electricity.  Before today, people used to install the 'viewer' to see who is outside the door, and it totally not fulfilled the requirement of fire proof at all.  The reason why it is not fulfilled is because the high temperature fire can burn through the little viewer, and it burns other building material in the house when fire comes through.  Therefore, the use of fire glass and electronically glass penal becomes the perfect combination to replace the viewer.  Regards to the electrical penal, it needs 65v to activate, and the transformer(110v – 240v) is designed to be inside of the door. 
  

The Liquid Glass (electronical could change from opaque to clear with a flick of switch. It gives you a total privacy when you need it. This specified structural glass has a nickname- "electric-control glass", produced with the multi-development of electronics and glass techniques. Stanley glass adopts international patent techniques to sandwich new liquid between glass sheets and control its shade by changing currency that limit sun light to enter and control up to 99% of UV ray as well, which provides you with a cozy environment.
　

The characters:
● Its shading could be gradually changed
● Fast response when transferring from transparency to translucent
● Laminated glass has high security and excellent sound-control
● Variety of control modes: switch, optical control, sonic control, temperature control
　 and remote net control
● Simple structure, low cost, and easy setting and controlling
● No trouble of curtain setting and cleaning
● Could be matched in every square, and every shapes and curves
● Allows total privacy or clear viewing
● With a modern look, good for interior design 

The application:

Apply to office, meeting room, hotel, villa, bathroom door and window, shower room, kitchen cabinet, glass curtain wall, technical resident conservatory, and business building, as well as automobile skylight, exhibition hall, command, private window of infants' room in hospital, open counter of bank, security window of automatic machine, and special effects for briefing and business commercials and etc. 
　

On the part of design, the electrical glass penal can be in any different shape on door.  As I have researched many doors in other countries, the glasses are widely adopted on doors and in many different shapes.  It is a good product to fit on those doors too.  The patent and trademark of this product is resisted in Taiwan, Japan, India and other countries, its welcome to contact us if any people who are interested in it.  Its safe, convenient, and bring the technology into human beings' life closely.  Contact us for this