What are the first-class qualification companies for steel structures?

Steel structure engineering of Anhui Hangxiao Steel Structure Co., Ltd.

Hefei China Railway Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Steel Structure Engineering of Anhui Zhongya Steel Structure Engineering Company

Anhui Lu Hong Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Steel structure engineering of Hefei China Railway Steel Structure Co., Ltd.

Jiangsu Construction Engineering Group Steel Structure Engineering Co., Ltd. specializes in steel structure engineering contracting.

Shanghai Mei Jian Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Professional contracting of steel structure engineering of Liaoning Ante color plate steel structure Co., Ltd.

Professional contracting of steel structure engineering of Hubei Chutian Steel Structure Co., Ltd.

Steel structure engineering of Beijing North Space Steel Structure Co., Ltd.

Beijing Century Huaguang Railway Steel Structure Engineering Co., Ltd.

Steel Structure Engineering of Beijing Municipal Steel Structure Engineering Co., Ltd.

Steel structure engineering of Beijing North Space Steel Structure Co., Ltd.

Henan Yaying Steel Curtain Wall Engineering Co., Ltd. specializes in steel structure engineering contracting.

Professional contracting of steel structure engineering of Midland Steel Structure Building System (Shanghai) Co., Ltd.

Shanghai Mingzhu Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Hebei Jin Huan Steel Structure Engineering Co., Ltd. specializes in steel structure engineering contracting.

Professional contracting of steel structure engineering of Zhejiang Gongyue Steel Structure Co., Ltd.

Zhejiang Tiansheng Steel Structure Co., Ltd. specialized in steel structure engineering contracting

Nantong Yuhuan Steel Structure Engineering Co., Ltd. specializes in steel structure engineering contracting.

Jiangsu Saite Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Jiangsu Qingtai Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Ningbo Naiji Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Shanghai Ye Fu Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Guangzhou Wuyang Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Steel Structure Engineering of Wuxi Huajin Steel Structure Co., Ltd.

Steel structure engineering of Shanghai Zhongyuan Kawasaki Heavy Industry Steel Structure Co., Ltd.

Steel Structure Engineering of Liaoning Daikin Steel Structure Engineering (Group) Co., Ltd.

Steel structure engineering of Xinxiang Aerospace Steel Structure Engineering Co., Ltd.

Steel Structure Engineering of Zhejiang Precision Work Aerospace Special Steel Structure Co., Ltd.

Steel structure engineering of Zhejiang Hongxiang Steel Structure Co., Ltd.

Steel Structure Engineering of Shenyang Beichen Steel Structure Engineering Co., Ltd.

Steel structure engineering of Beijing Sanjie International Steel Structure Co., Ltd.

Steel structure engineering of Beijing Century Huaguang Railway Steel Structure Engineering Co., Ltd.

Steel structure engineering of Chongqing Construction Engineering Steel Structure Co., Ltd.

Yingkou Steel Structure Engineering Co., Ltd. Steel Structure Engineering

Steel structure engineering of Zhejiang Precision Work Steel Structure Co., Ltd.

Steel structure engineering of Zhejiang Zhongnan Construction Group Steel Structure Co., Ltd.

Steel Structure Engineering of Zhejiang Gongyue Steel Structure Engineering Co., Ltd.

Steel structure engineering of Zhejiang Precision Work Steel Structure Co., Ltd.

Steel structure engineering of Hangzhou Hengda Steel Structure Industry Co., Ltd.

Chongqing Huaxia Steel Structure Co., Ltd. Steel Structure Project

Steel Structure Engineering of Shenzhen He Jiansheng Steel Structure Construction and Installation Engineering Co., Ltd.

Pinghu city Xinglong Steel Structure Installation Co., Ltd. specializes in steel structure engineering contracting.

Steel structure engineering of Zhejiang Jiutian Space Steel Structure Co., Ltd.

Steel structure engineering of Hangzhou Huadong Steel Structure Manufacturing Co., Ltd.

Steel Structure Engineering of Zhejiang Tianhong Steel Structure Co., Ltd.

Steel Structure Engineering of Heilongjiang Sanxin Steel Structure Engineering Co., Ltd.

Steel structure engineering of Beijing Lantian Kaisiban Steel Structure Co., Ltd.

Steel structure engineering of Zhejiang Precision Work Heavy Steel Structure Co., Ltd.

Steel Structure Engineering of Nanning Feijie Steel Structure Engineering Company

Steel structure engineering of Zhejiang Hongfeng Steel Structure Co., Ltd.

Pinghu city Xinglong Steel Structure Installation Co., Ltd. specializes in steel structure engineering contracting.

Steel Structure Engineering of Yunnan Huabang Steel Structure Engineering Co., Ltd.

Steel Structure Engineering of Hangzhou Sheng Da Steel Structure Manufacturing Co., Ltd.

Yiwu Jincheng Steel Structure Engineering Co., Ltd. Steel Structure Engineering

Steel Structure Engineering of Zhejiang Huacheng Steel Structure Engineering Co., Ltd.

Steel Structure Engineering of Zhejiang Tai Hao Steel Structure Co., Ltd.

Steel Structure Engineering of Kunming Sanhe Steel Structure Manufacturing Co., Ltd.

Steel Structure Engineering of Hengda Space Steel Structure Co., Ltd., Yuxi City, Yunnan Province

Steel Structure Engineering of Tianjin Wangxing Steel Structure Engineering Co., Ltd.

Installation project of lifting equipment of Tianjin Yijianjishi Steel Structure Engineering Co., Ltd.

Steel Structure Engineering of Tianjin Erjian Jishi Steel Structure Engineering Co., Ltd.

Tianjin Rongchang Fu Steel Structure Engineering Co., Ltd. Welding Task Subcontracting

Steel Structure Project of Chengdu Taige Steel Structure Grid Factory

Steel Structure Engineering of Shanghai Ye Fu Steel Structure Comprehensive Manufacturing Co., Ltd.

Shanghai Guandaer Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Steel Structure Engineering of Shanghai Gu Xiang Steel Structure Engineering Co., Ltd.

Professional contracting of steel structure engineering of Yantai Construction Engineering Group Steel Structure Co., Ltd.

Shouguang Hongyuan Steel Structure Construction Co., Ltd. Steel Structure Project

Steel structure engineering of Shandong Sanwei Steel Structure Co., Ltd.

Steel structure engineering of Yantai Xinhui Space Steel Structure Co., Ltd.

Steel Structure Engineering of Shandong Shangye Steel Structure Engineering Co., Ltd.

Heze Shengjian Steel Structure Engineering Co., Ltd. Steel Structure Engineering

Steel structure engineering of Anshan Dongfang Steel Structure Co., Ltd.

Steel structure engineering of Xuzhou Dongda Steel Structure Construction Co., Ltd.

Steel Structure Project of Jiangsu Jintai Steel Structure Co., Ltd.

Yanbian Jiajia Steel Structure Co., Ltd. specializes in steel structure engineering contracting.

Steel structure engineering of Jiangsu Huawei Steel Structure Co., Ltd.

Steel structure engineering of Jiangsu Tiandi Steel Structure Engineering Group Co., Ltd.

Jiangsu Changhong Steel Structure Engineering Co., Ltd. specializes in steel structure engineering contracting.

Steel structure engineering of Hunan Huaren Steel Structure Concrete Component Co., Ltd.

Steel structure project of Harbin Institute of Technology Space Steel Structure Curtain Wall Co., Ltd.

Steel Structure Engineering of Hebei Huaxin Steel Structure New Building Materials Co., Ltd.

Steel Structure Engineering of Nanning Feijie Steel Structure Engineering Co., Ltd.

Steel Structure Engineering of Guangdong Steel Structure Engineering Co., Ltd.

(Some newly applied enterprises may be missed)

For detailed information of each enterprise, you can go to mygjg, a steel structure recruitment network, to check the reference materials:

Steel structure recruitment network MYGJG