Qingdao Havit Steel Structure Co.,ltd Qingdao Havit Steel Structure Compay Limited has been specializing in designing and manufacturing Steel Structure Buildings ,Container house , Prefab house in China .Our company introduced advanced production technology and management , and has modern production lines for Light and Heavy steel structure and precision CNC machinery .Our products including Steel Workshop , Steel Warehouse ,Steel Structure for Industry and Commercial Buildings , and Steel Prefabricate Building ects .