... Dir manufacture in China Chopped steel fiber for concrete 1.ISO 9001 certificated 2.70% for Europe, Middle Asia, America market 3.Have ... standard of JG/T3046-1999 Steel Fiber Concrete,YB/T 151-1999 Steel Fiber for Concrete and ASTM AB820-90 Steel Fiberfor the ... Fiber-Rinforced Concrete.Package : 20kg/carton,20kg/bag,or ...