- 18
- Mar
rolling shutter door material,steel fireproof rolling shutter door,high speed rolling shutter door
Fire shutter door is a kind of active fire partition, generally made of steel plate and other metal plates, with buckle ring or hinged method, usually rolled up in the door and window on the mouth of the shaft box, the fire will be put down and spread, to prevent the fire from spreading from the door and window hole.
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