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What systerms approved for your mills and steel products ?

Our mills have been approved by ISO 9001:2008 and ISO 14001:2004 Standard for whole rolling processing.Our shipbuilding steel plates have obtained nine international classification societies certificates,such as ABS,LR,DNV,GL,CCS,KR,NK,RINA and BV.Our boiler steel plates have been approved by TUV from Germany.