Handan Zhengda Pipe Manufacturing Co., Ltd.
Yuayo Tirrit Co. Ltd.
Mitsubishi Steel Muroran, Inc.
Zhejiang Brother Guidepost Paint Co. Ltd.
New Bright Industrial Co. Ltd.Michigan, United States
Xiamen Liangzhou Chemical Machinery Co., Ltd.
Qingdao Haiyuan Industrial Co. Ltd.
Guangzhou Xinao Gas Co. Ltd.
Fujian Times Nebula Technology Co., Ltd.
Zunyi Fenghua Electromechanical Parts Co. Ltd.
Jotun Limited
Huzhou Renxin Bearing Steel Pipe Co. Ltd.