1. For different buildings, you can choose to install the doors inside or

 

outsideor in the middle. It will rolled together to the upper part of the door,

 

occupying less space of garage, and can prevent the mud, dirt and snow or rain

 

from coming inside the garage.

 

2. It will return automatically when unexpected trouble happened in case that

 

the door moving down to damage the vehicle and man, so that vehicle and man can

 

pass without difficult.

 

3. The door is firmly and equipped with automatic alarm device, preventing

 

against robbery or burglary, continuous alarming, ensures the safety of

 

residence. optional.