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    Steel-making DRI standard
    Metallurgical industry standard of the People's Republic of China
    （YB4170-2008）


    The national standard of the People's Republic of China（GB/T4136-1994）

    Copyright：Tangshan Outstanding Science and Technology Co.,LTD
    Address: Room No.510-511 Oriental building C, No.152 North Jianshe Road, High-tech development zone, Tangshan city, Hebei province, China (063020)
    Tel：+86-315-3179549  Fax：+86-315-3195748  Website：www.otsk.cn  Email：otsk@163.com  Contact:Mr Wang +86-18631540014