Modular housing is constructed with light steel frame as the skeleton and insulated sandwich panels as the wall and roof cladding, allowing for easy modular assembly and disassembly with bolt connections. The primary materials for container modular housing are the channel steel used for the framework and the sandwich panels for the walls and ceilings, with the quality of these materials directly affecting the overall quality of the container modular housing.
Standard sizes for portable cabins on construction sites include: 2.7m x 6m, 2.7m x 7.2m, 3.6m x 6m, 3.6m x 7.2m, and 3.6m x 8.4m. Specific dimensions are determined based on the site conditions and the number of construction personnel.

Mobile homes are a new type of light steel composite panel houses, which, with a reasonable combination of materials and steel structures, can achieve excellent safety performance. Specifically, they can withstand earthquakes of 7.0 magnitude or higher and typhoons of 12 on the Beaufort scale, a feat that is difficult for typical houses to accomplish. Therefore, they are widely used in earthquake-stricken areas.

The mobile cabins are lightweight, constructed with steel frames connected by self-tapping screws and standardized components. Most of the construction above the foundation is dry work, and they have strong adaptability to weather conditions on-site, resulting in fast construction speed and a duration approximately one-third of traditional buildings.

Activity houses are assembled and can be disassembled, meaning they are reusable. Compared to traditional reinforced concrete structures, they undoubtedly save on secondary costs and are more cost-effective in terms of construction pricing. Nowadays, many activity house manufacturers opt for renting out their products, making the costs even more affordable.
The roof of the portable building is designed for use above structures and will reflect sunlight to some extent. To minimize the impact of this reflection on the surrounding environment, the color intensity needs to be reduced. Additionally, the color design should avoid causing visual fatigue to humans, so colors visible to the human eye should not be used. Blue is a cool color, which has less impact on human vision and matches the color of the sky, making it a harmonious choice for the portable building's roof color.