Factories are high-demand commercial spaces, where different products can be selected to meet diverse requirements. The industrial sectional door series features sandwich-structured door panels with double-layer steel plates, aluminum plates or stainless steel plates filled with polyurethane foam insulation layer, with the door thickness ranging from 45mm to 75mm. Adopting chain-driven door operators, these doors can be equipped with windows or pedestrian doors, and multiple lifting methods are available for selection.