function of door closer1.automatic closing、2.closing speed can be adjusted、3、some door closer have the function of staying.  The fire door closers with not in holding device.

 

scope of application

The door closer is only suitable for one-way casement doors and is generally not used for frameless glass doors.

Door closer is commonly used in homes, offices, hotels, guest rooms, equipment rooms, warehouses, passages and so on.

 

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