Door control products in the hardware industry are very important accessories in our life. Although door closers and floor springs can ensure t...

Different fire doors have different flame retardant time in fire scenes，so that the effect is very different. There are many ways to choose a hig...

The sort of door closer is the accessories of the door industry in the hardware accessories industry. Usually，we are extremely easy to be misled b...

Dear overseas buyers, exhibitors and relevant parties involved: The Ministry of Commerce of PRC has decided that the 127th Canton Fair is to ...

The basic components of the hydraulic door closer are support guide, transmission gear, reset spring, one-way valve, rack plunger, throttle valve ...

Modern hydraulic door closer (hereinafter referred to as the door closer) began in the early twentieth century, a patent registered by the United ...

Closer products must meet the national standard GB/T 2698-2005. Closers used for fireproof doors should also meet the requirements of GA93-2004 Fi...

The most commonly used shutters are external shutters, which are installed in the following ways: The most common standard usage is that the ...

1) Usually there are installation templates in the instructions provided with the door closer, so first read the instructions and determine the in...

The newly installed door closer should be inspected and re-tightened for about a week to 10 days. The hydraulic oil recommended by the manufa...

1) Read the installation instructions before installation; 2) Install according to the steps and requirements of the instructions. According ...

Functional selection of products: Closers have the functions of closing and locking doors. The functions that need to be purchased include delay, buf...