handongjiangshangangguan shandong zhongguo

Company Description

liaocheng shandong Chengdu Iron and Steel Group, Daye Group, Baotou Steel, Baoshan Iron and Steel Group, the steel group, the Tianjin seamless, Xiningte steel mills, Hengyang Steel production of seamless steel pipes, boiler tubes, alloy pipe , high-pressure hoses, fertilizers, the special geological tube, helical coils, oil cracking of the stent tubes, the fluid. Volume of the company for a new