What is the relationship between Shandong Iron and Steel, Laiwu Iron and Steel and Jigang, or the relationship between the parent company and its subsidiaries, or the relationship between the head off

What is the relationship between Shandong Iron and Steel, Laiwu Iron and Steel and Jigang, or the relationship between the parent company and its subsidiaries, or the relationship between the head office and its branches? Laigang, Jigang and Nippon Steel are affiliated to Shangang Group. The reorganization of Shandong iron and steel enterprises is a slogan in response to the country's reduction of steel production capacity. Convenient unified management. Hebei Iron and Steel Group is a joint venture of four iron and steel plants: Hangang, Xuanhua, Chenggang and Shijiazhuang. Basically, each steel enterprise is still fragmented. Big principles and strategies should be discussed together. Such as price adjustment and product structure adjustment. . . All enterprises have legal personality.