Qingdao Wangbaoqiang Industry Co., Ltd.

Hebei Huali Rockwool Manufacturing Co., Ltd.

Wenma Forming and Shoring Co., Ltd.

SHANGHAI BOILER WORKS CO., LTD.

Kunshan Changrui Air Conditioning Purification TechnologyCo., Ltd.

Shandong Huaning Electric Tracing Technology Co.,Ltd.

Xinjiang Zhongtai Special Electric Equipment Co., Ltd.

Henan Dingli Pole & Tower Co., Ltd.

QINGDAO HUIJINTONG POWER EQUIPMENT CO., LTD.

Xiangtan Iron & Steel Group Co., Ltd.

INNER MONGOLIA BAOTOU STEEL UNION CO., LTD.

Gansu JISCO Group Hongxing Iron and Steel Co., Ltd.

HENGYANG VALIN STEEL TUBE CO., LTD.

Jingye Group Co., Ltd.

Yanda (Haimen) Heavy Equipment Manufacturing Co., Ltd.

Sichuan Zhongtai Uniteddesign Co., Ltd.

Tianjin Yatailong Thermal Control Technology Co., Ltd.