This kind of thick PP fiber is substitute of steel fiber for concrete, so it also has characters of synthetic fiber, it is more easily be dispersed, operated, good corrosion resistance, no damage to mixer, etc. It is made of PP resin and treated in surface by special way, it has the advantages of high-breaking tenacity, high-bond stress force and excellent disperse in the concrete. It could change the condition of cement concrete that with low tensile strength, low coefficient of elongation, crisp. Make it more good tensile strength, more good resisting shear, more good crack resistance, good fatigue resistance, etc. So it is widely used in application of building, road and bridge, irrigation works.