... About usEstablished in 2000, Qingdao Aolifeng Metal Material Co., Ltd. is a professional manufacturer and exporter that is ... channel,corrugated steel sheet,etc.* Products&Service Scope:Design&Engineering Service, Steel Building,Space Frames, Portable Cabins, ... framing, roof & wall materials, Tempcon (sandwich) panels* Engineering Design Software:AutoCAD,PKPM,MTS,3D3S, Tarch, Tekla Structures(Xsteel ...