... Polypropylene Fiber Density g/cm3 : 0.91Length(mm) : 12,15,17,19Acid and Alkali resistance : strongTensile Strength (mps) : 400 min.Melting ... have obvious advantages of its single fiber slim in length,large in amount after fully spread out in concrete,comparing with ... .Make the component of the concrete,tubing and board.4.Large acreage concrete pouring, such as quay.5.The roof,basement ...