Company name: Shandong Zhongzheng steel pipe manufacturing Co.,ltd. Contact person: yanling Xu Mobile phones: 008615063501373 Fax: 0086-635-8882844 Add:MudanjiangRoad,EconomicDevelopment-Zone of liaocheng. Shandong Province ,China. Email:xuyanling88323(at)163(point)com/zzgmb(at)yahoo(point)cn MSN:xy...