1. Zhengzhou Hongtai Steel Pipe Co., Ltd. was established on April 18th, 21. The legal representative is Ren Lei, and the company's business scope includes: selling steel pipes and engaging in the import and export of goods and technologies (except for goods and technologies whose import and export are subject to examination and approval according to national laws and regulations).

2. Zhengzhou Special Steel Factory, Henan Province was founded in 1989. It is a professional construction steel production enterprise licensed by the State Administration of Quality Supervision, registered by the Trademark Office of the State Administration for Industry and Commerce and certified by the ISO91 quality management system.