What is the relationship between Handan Youfa and Tianjin Youfa?

Handan Youfa and Tianjin Youfa have a superior-subordinate relationship. Handan Youfa's full name is Handan Youfa Steel Pipe Co., Ltd. and Tianjin Youfa Steel Pipe Group Co., Ltd., which was established on August 20 10 and invested by Tianjin Youfa Steel Pipe Group Co., Ltd. Handan Youfa is a subsidiary of Tianjin Youfa, so there is a superior-subordinate relationship between Handan Youfa and Tianjin Youfa.