The aluminium roof window vs skylight form is made by seamless welding of high quality aluminum alloy extruded profiles by argon arc welding. It has the characteristics of high interface strength, surface corrosion resistance and high waterproof performance. The surface is made of electrostatic powder high-temperature paint, and the paint used on the surface of the sunroof is made of outdoor special powder coating. After baking up to 300 degrees, it can be firmly attached to the form and integrated with the window. It is characterized by excellent corrosion resistance and various colors.