In many existing commercial buildings, door hardware was originally selected based on basic functionality and cost, rather than fire safety and long-term regulatory compliance. However, as building codes become stricter and fire safety awareness increases, upgrading door hardware from ordinary comme

These standards are recommended by the Hollow Metal Manufacturers Association as representing the long accepted usual preferences of both architects and users under normal conditions of use. Under some circumstances, these standard locations are inadvisable for certain items based on accessibility c

With the development of metalworking technology, the use of door hardware is becoming more and more widespread. door hardware is an extremely important type of everyday metalwork in people's daily lives, and it is used in wooden doors, glass doors, sectional doors and other metal devices made by man