Adopt a fully automated continuous production line; The inner and outer door panels are made of steel plates or aluminum plates. The interior of the door panels is filled with environmentally friendly polyurethane foam material with a density of 48kg/m³. The height of each door panel is 500mm. The door panel surface can be selected according to the design requirements. To enhance the wind resistance of the entire door, reinforcing steel plates and strips are strategically placed at the door panel interfaces for reinforcement. At the connection points of each door panel, sealed rubber is installed to block the transfer of cold and heat and minimizing thermal damage. The wind pressure resistance strength of the door panel is≥750N/m³。