Infrared photo beam sensor and safety edge protection device for PVC high speed door
PVC high speed rolling shutter door has the characteristics of heat preservation, collision prevention, insect prevention, windproof, dustproof, sound insulation and so on. It can realize fast...
How Do Automatic Doors Work?
How Does The Automatic Doors Work? Automatic doors are one of the best modern inventions. All we have to do is walk up to the door and it magically opens for us. An automatic door is a closing or...