The aluminium alloy bifold windows adopt high-end hardware and aluminium profile as building materials.
The device of aluminum alloy door and window frames should be carried out after the wet work of indoor and outdoor painting, and the device of aluminium wi fans should be carried out after the painting of door and window frames.
The civil construction party should pop up the vertical line, horizontal line, inlet and outlet line of doors and windows in front of the door and window frame device, and provide the main lightning protection connection point.