KFC doors need to meet some conditions before manufacturing and processing, and KFC doors that meet the processing conditions will meet the specifications. We use Jinan KFC door to see the manufacturing and processing conditions of KFC door: the selection of profiles should be from the catalogue of doors and windows products, considering the functional requirements. In this series of products, the profile and accessories are integrated in installation. When selecting the profile according to the opening mode of the window, we should pay attention to whether it is open inside or outside, whether it is pushed or pulled left and right or up and down. We should choose the profile specially designed for this opening mode according to different opening modes. Heat transfer coefficient k of the window The heat transfer coefficient k of the whole window is determined by the heat transfer coefficient of the door and window sash and the heat transfer coefficient of the glass * * *, and it must be comprehensively considered to meet the specified heat transfer coefficient requirements. The selected profiles should meet the requirements of wind pressure resistance of doors and windows. Can be selected according to experience, and then check the wind pressure. If the windows are used in high-rise buildings, or the windows are large in size, the wind pressure resistance performance must be calculated. The selection of hardware should meet the requirements of the function and durability of doors and windows, and the selection of hinges, sliding bearings, pulleys and other accessories should meet the requirements of the bearing capacity of doors and windows, and adapt to the size of the installation notch of window frame fan profile accessories. The hardware of KFC door shall meet the General Requirements for Hardware of Building Doors and Windows (JC/T 2 12). Sound insulation performance, sound insulation performance R of doors and windows depends on sash structure, glass structure and glass mosaic method. Glass mosaic, glass mosaic mode, glass weight and thickness affect the selection of door and window sash profiles and accessories. The width of the notch of the window frame facing the profile should be able to accommodate the thickness of glass and glass sealing material on both sides.