... with GB, ASTM... ISO9000; 2), Exquisite surface; 3), Steady structure; 4), Low cost, high benefit. 1), Comply with GB, ASTM,....ISO9000 ... ;2), Exquisite surface;3), Steady structure;4), Low cost, high benefit.5), Excellent design team6), Strict quality ... steel structure buildling. Steel Structure Warehouse of Hempel (China) International Co., Ltd.