1.prefab steel structure,large-span steel structure ,prefab steel structure building/houses 2. high-quality products name:prefab steel structure,large-span steel structure ,prefab steel structure building/houses1.easy and quick ... .SPECIFICATION: NoCategoryItem detailsSpecification description1Basic partsLengthNM+160(N=4,5,6... M is modular, 1M=1820mm)2WidthNM+160(N=3,4,5 ...