... Ads, etc)Product/Service(We Sell): Steel structure design,steel structure manufacture,steel structure build in,installation of metal doors ... H-section , hot-rolled H-section, channel, steel column, steel beam),standard frames, secondary framing, roof & wall ... , highrise building,bridge,commercial center, exhibition hall, stadium and the like. ISO9001 Quality Certificate OHSMS18000 ISO14001 Environment ...