... Ruiguo Tongsheng IMP.&EXP. Co., Ltd. (our head office), Tianjin Ruihe Steel Trade Co., Ltd., Tangshan Ruiyin International Trade Co., Ltd., Tianjin Guoshengtai logistics Co., Ltd. and Tianjin Weishihengxin Steel Co., Ltd. We have ... a registered capital of US$ 50 million. Our group is engaged in the production and trade of ...