Door closer is a mechanical device that closes a door, in general after someone opens it, or after it was automatically opened.There are four styles of interior door-closer:Surface-mounted,Concealed in frame,Concealed in floor and Concealed in door.Our JY door closers are mainly Surface-mounted.With both closing and latching speeds independently adjustable, they will satisfy your customer's  requirements for smooth operating door control.They feature an adjustable back check feature that helps prevent  damage to the closer, door, and adjacent surface when the door is violently swung open due to wind or heavy  pedestrian traffic.

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