Expandable house

The 20 foot biplane expansion box is a modular and mobile building solution that combines the sturdiness of a container with the flexibility of expandable space, and has been widely popular in domestic and international markets in recent years. Its core advantages are mainly reflected in the following aspects:
Core advantages
Extremely high space utilization, achieving "small volume, large space"
Folding state: When transported or stored, the width is only about 2200mm, which is consistent with the standard 20 foot container size and convenient for sea and land transportation.
Unfold state: After the two side wings are unfolded, the internal width can be expanded to about 6300mm, and the usable area can reach about 36 square meters, with a space expansion of nearly three times. This design allows it to easily accommodate a standard living layout of one bedroom, one living room, one kitchen, and one bathroom, or be used as a spacious office or retail space. ‌
Significant reduction in transportation costs and excellent logistics efficiency
Due to the significant reduction in volume after folding, a standard 40 foot high cabinet (40HQ) can transport 6 sets of folded 20 foot biplane expansion boxes at once. In contrast, traditional container houses can only transport one set per unit.
This efficient loading method can directly reduce the transportation cost of a single set by nearly 66%, saving considerable costs for large-scale project procurement. ‌
Easy to install and quickly put into use
Adopting factory prefabrication and modular production, all components have completed standardized assembly before leaving the factory.
On site installation only requires one crane and six workers to complete the overall deployment, fixation, and foundation connection in about 2 hours, achieving "immediate use".
Compared to the traditional brick and concrete construction period of several months or the tedious assembly of conventional prefabricated houses, its efficiency advantage is extremely significant. ‌
Durable and sturdy structure, safe and reliable
Framework: Made of galvanized high-strength square tube, angle iron and other light steel materials to ensure the overall structural stability and withstand natural external forces such as wind and rain.
Wall: Anti corrosion double-sided color steel composite panels or insulation sandwich panels are commonly used, which have good insulation, heat preservation, waterproofing, and fire resistance properties, and can effectively maintain indoor temperature stability.
Connectors: High strength hinges are used in key areas to ensure flexible, secure, and reliable opening and closing of the expanded parts. ‌
Flexible and scalable to meet diverse needs
Vertical expansion: Multiple boxes of the same size can be stacked up and down to create a double-layer duplex structure, doubling the space utilization rate.
High low configuration combination: The combination of "large box+small box" can be used (such as using a 20 foot/40 foot bottom layer and stacking F700 or 10 foot boxes on the upper layer), which not only increases space, but also shapes a staggered architectural appearance to meet more creative design needs. ‌
Environmentally friendly, energy-saving, and reusable
As a modular building, it is easy to disassemble and assemble, does not generate a large amount of construction waste, and conforms to the concept of green building.
Materials can be recycled and reused, with a long lifecycle and low long-term usage costs
Widely applicable scenarios
With its advantages, the 20 foot biplane expansion box is widely used in various fields such as temporary office/accommodation on construction sites, emergency rescue and resettlement, medical and epidemic prevention stations, commercial retail stores, education and training, event exhibitions, military research, and personal residence. ‌‌

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