Iron Rail 1.Standard:GB 3426-1982, GB 2585-2007, GB ... NameTianjin Shangyi Metal Structure Trade Co. LtdAddressA1905 of Future Plaza ,No 103,Weidi Road ,Hexi District , Tianjin ,ChinaWebsitetjshangyijinshu.en.alibaba.comtjtwt ... .alibaba.comPh86-022-23528207 CEO Yan : 86-13902080129Fax86-22-88389550Postcode300201 Iron Rail