1. Profile: the nominal wall thickness of the main force-bearing part is 1.8mm; 2. Hardware: suitable for imported European standard C-slot hardware; 3. Heat insulation strip: 24mm wide European standard heat insulation strip design; 4. Adhesive strip: Three-layer sealing strip design, with better sealing performance; 5. Glue injection: optional infusion of new filling materials, greatly improving thermal insulation performance; 6. Optional configuration: optional built-in electric/manual shutter glass.