Our aluminium profiles and hinge design have completely revolutionized the traditional installation method. Previously, customers had to select aluminium profiles that had already been machined with hinge installation holes via CNC machining, a restriction that made adjusting the height of doors difficult. However, our developed hinges can perfectly cover these CNC machined hinge installation holes, thus completely eliminating the limitation on height adjustment. This means that customers can now freely adjust the height of doors without worrying about the constraints of aluminium profiles.