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On September 21, the graphene-reinforced polyurethane composite fishplate passed the technical review organized by China Railway Zhengzhou Bureau Group .
The graphene-reinforced polyurethane composite fishplate is jointly developed by the Electricity Department and the Public Works Department of the Zhengzhou Bureau Group Corporation and Shanghai High-speed Railway Electric Technology .
Before passing the technical review, the graphene-reinforced polyurethane composite fishplate has been tried out in Zhengzhou Bureau Group Corporation for more than a ye.