... :wire rod Package :Ruiguotongsheng Enterprise Group consists of 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 ...