... ... ISO9000; 2), Exquisite surface; 3), Steady structure; 4), Low cost, high benefit. 1), Comply with GB, ASTM,....ISO9000; ... surface;3), Steady structure;4), Low cost, high benefit.5), Excellent design team6), Strict quality control 7), Manufacture according ... Good market reputation for all kinds of steel structure buildling. Steel Structure Warehouse of Hempel (China) International Co., Ltd.