Zhonggao Huihai Industrial Group is reliable, and its companies have various construction qualifications, such as the first-class qualification for general contracting of construction projects, the second-class qualification for specialized contracting of steel structure projects, the second-class qualification for specialized contracting of architectural decoration projects, the third-class qualification for specialized contracting of basic engineering, and the third-class qualification for specialized contracting of building electromechanical installation projects.

The group consists of Qingdao Freeman Metal Material Co., Ltd., Qingdao Aohua Construction and Installation Engineering Co., Ltd., Qingdao Yuan Jing Architectural Decoration Engineering Co., Ltd., Qingdao Freeman Advertising Co., Ltd., Qingdao Haichuan Logo System Engineering Co., Ltd., Qingdao Huan Yi Exhibition Engineering Co., Ltd. and other subsidiaries.