I am Aubert chow, Manager of  Xinxing steel structure ,china.whatsapp+8618167181548,email:qiangjunzhou@163.comI got your message in electroencephalographic. My company produce steel structure such as steel beam,C purlin,Z purlin,galvanized panel, sandwich panel ,corrugated sheet,  and roofing system for bridge, prefabricated building,steel atructure warehouse, industrial workshop,residential project,garage etc.I talk with you in whatsapp and facebook...