door closers

As an important part of the door control system, the door closed device does need regular maintenance to ensure its normal work and extend its service life. Here are some important information…

The door closed device is a mechanical device installed on the door, its main role is to realize the automatic closing of the door, and has a variety of additional functions to…

The installation position of the door closers usually depends on many factors such as the weight, size, frequency of use and installation environment of the door. Here are some common door closers…

In the purchase of door closers, you need to consider a number of factors to ensure that the purchase of suitable products. Here are some of the main shopping considerations: First, understand…