This is the semi-finished structure of our 20-foot expandable container house, showing the main frame and wall panels. The main frame is made with galvanized steel, providing strong support and long-lasting durability. For the walls, we use 75mm EPS panels for practical insulation and lightweight performance. We can also add bamboo-wood fiber panels on the interior side, and metal carved panels on the exterior side, depending on your needs. #ExpandableContainerHouse #ContainerHouse #PrefabHouse