... fast install and dismantle 4)good appearance Beautiful steel office building The steel prefab shed in the picture we ... Bureau Veritaspls see them in the following .Websitewww.baoduo.com Production capacity Main steel structure 20000mts, secondary steel 15000mts, ... shed for market and ground parking, supermarket , high rise steel office buiding, factory , plant, exhibition hall, gym, dormitory building, ...