... column/beamBoltanchor,ordinary,high strenght boltRoof &Wallsandwich panel or steel color plateSheet0.5mm or 0.6mm ... (light steel structure) products: 1) Metal structure series, such as Portal Steel Frame, Tower construction, ... prefab house, including 1) all kinds of modular house ,with/without wheels under house. 2) Supplying building facilities-assembly portable house (modular house, container house ...