... on holiday from 4th, April to 6th, April. ISO9001 prefabricated building constructionProduct specification:1)Steel frame system:Main frame: Welded H ... steel office buiding, factory , plant, exhibition hall, gym, dormitory building, bus station, gas station etc.The details of steel structure ... slope8)Or your idea!If you have project or plan to build your own steel building, pls contact me feel free. We ...