... door, 740mm*1950mm Size20ft , 40ftPrefabricated house, modular house, container house, simple container house,Prefab container housing for holiday home, ... steel column/aluminum alloy your dream house about us:Zhejiang Dacheng Steel Structure Co., Ltd. was founded in 2003 ... and BOX-TYPE steel structure production lines, full-range impeller blasting equipment, production lines of rack and truss, ...