| Size specifications (before/after expansion) | length | 6m/9m; 8m/12m (Standard size, customizable) |
| width | 2.4m/4.8m; 3m/6m (single-sided/double-sided expansion optional) |
| high | 2.8m/2.8m (Indoor clear height is above 2.5m, height remains unchanged after expansion) |
| Expanding area | Expanding to one side increases the area by 6-8 square meters, while expanding to both sides increases it by 12-16 square meters. |
| Main structure | Frame material | Q235B steel frame, 3.5mm wall thickness, hot-dip galvanized for corrosion protection, wind resistance level 12, seismic intensity level 7. |
| Wall material | Outer layer of color steel plate (0.8mm) + polyurethane insulation cotton (75mm) + inner layer of fireproof gypsum board, providing sound and heat insulation, fire rating B1. |
| Expansion Agency | The hydraulic/manual expansion mechanism is easy to operate, ensures no shaking after expansion, and has excellent sealing performance. |
| Roof and ground | Roofing material | Color steel sandwich insulation panels, waterproof membrane installation, 20° slope, leak-proof and snow-resistant. |
| floor material | Anti-slip and wear-resistant reinforced flooring, with a base layer of patterned steel plate + cement leveling, load-bearing capacity ≥300kg/㎡, seamless connection to extended areas. |
| Door and window configuration | window | Thermally broken aluminum casement/sliding windows, double-glazed tempered glass, sound and heat insulation, with mosquito screens, and floor-to-ceiling windows can be added on the extended side. |
| Door | Class A security entrance door, aluminum alloy door frame, equipped with fingerprint lock, airtight and soundproof, double door can be customized. |
| Additional doors and windows | Customizable sliding doors and viewing windows to suit the lighting needs of expanded spaces. |
| Interior configuration | Wall treatment | Eco-friendly integrated wall panels/bamboo fiber panels, available in multiple colors, easy to clean, odorless, and allow for seamless splicing of expanded wall areas. |
| suspended ceiling | Aluminum ceiling panels offer a smooth and aesthetically pleasing finish, with pre-installed mounting spaces for lighting fixtures, air conditioning, and fresh air systems. |
| Circuit configuration | Standard copper core wire, equipped with distribution box, residual current device, multiple sockets and switches, and reserved interfaces for air conditioner, water heater and fresh air system. |