For China’s 2024 Antarctic Scientific Expedition Support Program, DMT developed a prefabricated modular shelter system composed of ultra-low-temperature-toughened Q690D steel panels with vacuum-insulated cladding. Each module underwent cryogenic impact testing at -60°C and passed ISO 20255:2019 extreme-environment certification. The 24-unit complex was deployed within 11 days on King George Island and remains fully operational after 18 months of continuous service.