... China, Shandong Wisdom is the largest Steel Building Materials Manufacturing Factory in Northern China. We have been dedicated in manufacturing and ... world in steel construction industry.Add:Xingfu Industrial Park, Boxing County , Binzhou, Shandong, China (Mainland) Zip: 256510 Contact:Traci LeeMO:+86 ... -543-2169999Sincerity,Excellence,Supremacy and Win-Win! Prefab steel structure factory