General Steel Holdings, Inc. engages in the manufacture of steel products. The company is headquartered in Beijing, Beijing. The company went IPO on 2008-08-08. The firm manufactures and sells steel products, such as steel rebar, hot-rolled carbon and silicon sheets and spiral-weld pipes. The firm sells its products primarily to distributors and related parties. The firm has controlling interests in a trading subsidiary and an Internet-of-things subsidiary: Tianjin Shuangsi Trading Co., Ltd. (Tianjin Shuangsi) and Tongyong Shengyuan (Tianjin) Technology Development Co., Ltd. (Tongyong Shengyuan). Tianjin Shuangsi is a trading company that primarily trades iron ore, nickel-iron-manganese alloys and other steel-related products. Tongyong Shengyuan is a holding company of Tianjin Shuangsi.