The door closer is a spring-like hydraulic device on the door head. When the door is opened, it can be compressed and released to automatically close the door. It acts like a spring door and can ensure that the door is opened accurately and timely to the initial position. .
The significance of the door closer is not only to automatically close the door, but also to protect the door frame and door body (smooth closing). More importantly, the door closer has become an important part of the intelligent management of modern buildings.