HHK**A Series Sliding Support | Honored to be listed as "Guangdong Province Famous and High-quality Hardware Products" and "Foshan Standard Product Certification" Recently, the list of "Guangdong Province Famous and High-quality Hardware Products" and "Foshan Standard Product Certification" was anno

Enhance Safety And Convenience of Concealed Door Closer What’s the Concealed Door Closer? Concealed door closer have become a popular choice when it comes to ensuring door safety and functionality. These innovative devices provide high-quality performance, superior fire resistance and outstanding s

The knowleage of Door and window hardware : how to adjust the closing force of door closer? Adjust the closing force of the door closer is also to adjust the closing speed, the force is large when the speed is fast, the force is small, the door closer closing speed is slow. Adjust the closing speed

The door closer is an important control function of the door control hardware, and it plays a vital role in safety and fire prevention. A door closer with stable performance and complete functions can not only bring safety to people's work and life, but also greatly reduce personal and property losses caused by accidental fires.