Model No.︰YH-SDS
Brand Name︰YH
Country of Origin︰Taiwan, China
Unit Price︰US $ 1 / pc
Minimum Order︰1 pc
This patent self descend system is to protect human and building in case of fire.
It could be additional mount with a timer so shutter door could do twice descends.
As well as connect with smoke sensors.
Or connect with UPS.
We also have auto/manual shutter door,escape shutter door,spring shutter door,simple fire prevent shutter door....etc.
