State-owned Wuchang Shipyard
China No.20 Metallurgical Construction Company Steel Structure Manufacturing General Factory
China No.22 Metallurgical Construction Company Metal Structure Engineering Company
Shanghai baoye construction co., ltd
Jiangnan heavy industry co., ltd
Zhongtieshanqiao Group Co., Ltd.
Shanghai guandaer steel structure co., ltd
Shanghai Zhongyuan Kawasaki heavy industry steel structure co., ltd.
Zhejiang southeast net rack co., ltd
Zhejiang precision work steel structure co., ltd
Jiangsu Huning Iron and Steel Machinery Co., Ltd.
Zhejiang Hangxiao Company Limited
Shandong Laigang construction co., ltd
Beijing Sanjie International Steel Structure Co., Ltd.
Shanghai Zhenhua Port Machinery (Group) Co., Ltd.
Anhui Huang Fu steel structure co., ltd
Angang construction group co., ltd
Maanshan iron and steel co., ltd. steel structure making and installing branch
China CNR Ji 'nan Locomotive and Rolling Stock Factory
Guangzhou guangchuan international co., ltd
Beijing Shougang Construction Group Co., Ltd.
Qingdao Oriental Tower Company Limited
China first metallurgy construction co., ltd
China Railway Baoqiao Company Limited
Zhongye success construction co., ltd
Hongfeng industry group co., ltd
China Railway Bridge Bureau Group 7 th Engineering Co., Ltd.
China Construction Second Engineering Bureau
Wuhan steel construction engineering group co., ltd
Kuya Construction Co., Ltd.
Anhui Lu Hong Steel Structure (Group) Co., Ltd.
Hangzhou hengda steel structure industry co., ltd
China huadian engineering (group) co., ltd
Offshore Oil Engineering Co., Ltd.
Zhongye Tiangong Shanghai Shisanye Construction Co., Ltd.
Hangzhou dida net rack manufacturing co., ltd
Changzhi Tsinghua machinery factory
Chaofeng steel structure group co., ltd
Yangtze River Precision Work Steel Structure (Group) Co., Ltd.